dukedb

package module
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 Go to latest Published: Nov 7, 2015 License: MIT Imports: 14 Imported by: 26

README

DukeDB

Databasse abstraction system/ORM for the GO language. The project aims to provide a unified interface to access different underlying database systems.

Warning

This project is still under heavy development. Use with caution.

License

This project is under the MIT License. For Details, see LICENSE.txt

Documentation

Index

Constants

View Source 
const (
	RELATION_TYPE_HAS_ONE    = "has_one"
	RELATION_TYPE_HAS_MANY   = "has_many"
	RELATION_TYPE_BELONGS_TO = "belongs_to"
	RELATION_TYPE_M2M        = "m2m"
)
View Source 
const (
	HOOK_BEFORE_CREATE = "before_create"
	HOOK_AFTER_CREATE  = "after_create"
	HOOK_BEFORE_UPDATE = "before_update"
	HOOK_AFTER_UPDATE  = "after_update"
	HOOK_BEFORE_DELETE = "before_delete"
	HOOK_AFTER_DELETE  = "after_delete"
)

Variables

View Source 
var RELATION_TYPE_MAP map[string]bool = map[string]bool{
	"has_one":    true,
	"has_many":   true,
	"belongs_to": true,
	"m2m":        true,
}

Functions

func CallModelHook 

func CallModelHook(b Backend, m interface{}, hook string) apperror.Error

func GetModelCollection 

func GetModelCollection(model interface{}) (string, apperror.Error)

func MustGetModelCollection 

func MustGetModelCollection(model interface{}) string

func PickRandom 

func PickRandom(slice interface{}) interface{}

func PickRandomSubSlice 

func PickRandomSubSlice(slice interface{}, count int) interface{}

func Pluralize 

func Pluralize(str string) string

func RandomBool 

func RandomBool() bool

func RandomInt 

func RandomInt(min, max int) int

func RandomTime 

func RandomTime(min, max time.Time) time.Time

func SetPointer 

func SetPointer(ptr, val interface{})

Set a pointer to a value with reflect. If the value is a pointer to a type, and the the pointer target is not, the value is automatically dereferenced.

func SetSlicePointer 

func SetSlicePointer(ptr interface{}, values []interface{})

func StrAfterFirst 

func StrAfterFirst(str, separator string) string

func StrAfterLast 

func StrAfterLast(str, separator string) string

func StrBeforeFirst 

func StrBeforeFirst(str, separator string) string

func StrBeforeLast 

func StrBeforeLast(str, separator string) string

func StubText 

func StubText(length int) string

func StubTextRandom 

func StubTextRandom(min, max int) string

Types

type Attribute 

type Attribute struct {
	// Embed field.
	Field
	// contains filtered or unexported fields
}

func BuildAttribute 

func BuildAttribute(field *Field) *Attribute

buildAttribute builds up an attribute based on a field.

func (*Attribute) AutoIncrement 

func (a *Attribute) AutoIncrement() bool

func (*Attribute) BackendEmbed 

func (a *Attribute) BackendEmbed() bool

func (*Attribute) BackendMarshal 

func (a *Attribute) BackendMarshal() bool

func (*Attribute) BackendType 

func (a *Attribute) BackendType() string

func (*Attribute) BuildFieldExpression 

func (a *Attribute) BuildFieldExpression() *FieldExpr

func (*Attribute) DefaultValue 

func (a *Attribute) DefaultValue() interface{}

func (*Attribute) IgnoreIfZero 

func (a *Attribute) IgnoreIfZero() bool

func (*Attribute) IndexName 

func (a *Attribute) IndexName() string

func (*Attribute) IsIndex 

func (a *Attribute) IsIndex() bool

func (*Attribute) IsPrimaryKey 

func (a *Attribute) IsPrimaryKey() bool

func (*Attribute) IsUnique 

func (a *Attribute) IsUnique() bool

func (*Attribute) IsUniqueWith 

func (a *Attribute) IsUniqueWith() []string

func (*Attribute) Max 

func (a *Attribute) Max() float64

func (*Attribute) Min 

func (a *Attribute) Min() float64

func (*Attribute) SetAutoIncrement 

func (a *Attribute) SetAutoIncrement(val bool)

func (*Attribute) SetBackendEmbed 

func (a *Attribute) SetBackendEmbed(val bool)

func (*Attribute) SetBackendMarshal 

func (a *Attribute) SetBackendMarshal(val bool)

func (*Attribute) SetBackendType 

func (a *Attribute) SetBackendType(val string)

func (*Attribute) SetDefaultValue 

func (a *Attribute) SetDefaultValue(val interface{})

func (*Attribute) SetIgnoreIfZero 

func (a *Attribute) SetIgnoreIfZero(val bool)

func (*Attribute) SetIndexName 

func (a *Attribute) SetIndexName(val string)

func (*Attribute) SetIsIndex 

func (a *Attribute) SetIsIndex(x bool)

func (*Attribute) SetIsPrimaryKey 

func (a *Attribute) SetIsPrimaryKey(val bool)

func (*Attribute) SetIsUnique 

func (a *Attribute) SetIsUnique(val bool)

func (*Attribute) SetIsUniqueWith 

func (a *Attribute) SetIsUniqueWith(val []string)

func (*Attribute) SetMax 

func (a *Attribute) SetMax(val float64)

func (*Attribute) SetMin 

func (a *Attribute) SetMin(val float64)

type Backend 

type Backend interface {
	// Returns the name of the backend.
	Name() string
	SetName(name string)

	// Returns true if the backend uses string Ids like MongoDB.
	HasStringIds() bool

	HasNativeJoins() bool

	// Debug returns true if debugging is enabled.
	Debug() bool

	// SetDebug enables or disables the debug mode.
	// In debug mode, all queries will be logged, and some methods will panic
	// instead of returning an error.
	SetDebug(bool)

	Logger() *logrus.Logger
	SetLogger(*logrus.Logger)

	ProfilingEnabled() bool
	EnableProfiling()
	DisableProfiling()

	// Duplicate the backend.
	Clone() Backend

	// RegisterHook registers a hook function that will be called for a model.
	// The available hooks are: (before/after)_(create/update/delete).
	RegisterHook(hook string, handler HookHandler)

	// GetHooks returns a slice with all hooks of the hook type.
	GetHooks(hook string) []HookHandler

	// Get model info for all registered collections.
	ModelInfos() ModelInfos

	// Get the model info for a collection.
	// Returns nil if not found.
	ModelInfo(collection string) *ModelInfo

	// Retrieve the ModelInfo for a model instance.
	InfoForModel(model interface{}) (*ModelInfo, apperror.Error)

	// Determine if a collection is registered with the backend.
	HasCollection(collection string) bool

	// RegisterModel registers a model type witht the backend.
	//
	// The first argument must be a pointer to an instance of the model,
	// for example: &MyModel{}
	RegisterModel(model interface{}) *ModelInfo

	// Build analyzes the relationships between models and does all neccessary
	// preparations for using the backend.
	//
	// Build MUST be called AFTER all models have been registered with
	// backend.RegisterModel() and BEFORE the backend is used.
	Build()

	// NewModel creates a new model instance of the specified collection.
	NewModel(collection string) (interface{}, apperror.Error)

	// Build a slice of a model for model Collection.
	NewModelSlice(collection string) (interface{}, apperror.Error)

	// ModelToMap converts a model to a map.
	ModelToMap(model interface{}, marshal bool, includeRelations bool) (map[string]interface{}, apperror.Error)

	// Exec executes an expression.
	// The result will be nil for all statements except a SelectStatement.
	Exec(statement Expression) apperror.Error

	ExecQuery(statement FieldedExpression) (result []interface{}, err apperror.Error)

	// Create the specified collection in the backend.
	// (eg the table or the mongo collection)
	CreateCollection(collection ...string) apperror.Error

	// RenameCollection renames a collection to a new name.
	RenameCollection(collection, newName string) apperror.Error
	DropCollection(collection string, ifExists, cascade bool) apperror.Error
	DropAllCollections() apperror.Error

	// CreateField creates the specified field on a collection.
	// Note that the field must already be on the model struct, or an error
	// will be returned.
	//
	// If you need to create arbitrary fields that are not on your model,
	// use Exec() with a CreateFieldStatement.
	CreateField(collection, field string) apperror.Error

	// RenameField renames a collection field.
	// The model must already have the new name, or an error will be returned.
	RenameField(collection, field, newName string) apperror.Error

	// DropField drops a field from a collection.
	// The field must be the backend name.
	DropField(collection, field string) apperror.Error

	// Create an index for fields on a collection.
	// If you need more complex indexes, use Exec() with a CreateIndexStatement.
	CreateIndex(collection, indexName string, unique bool, fields ...string) apperror.Error

	// Drop an index.
	DropIndex(indexName string) apperror.Error

	NewQuery(collection string) (*Query, apperror.Error)
	NewModelQuery(model interface{}) (*Query, apperror.Error)

	// Create a new query.
	//
	// Can be used with different signatures:
	// backend.Q("collection_name") => Get a query for a collection.
	// backend.Q("collection_name", Id) => Get a query for a model in a collection. Id must be numeric or string.
	// backend.Q(&myModel) => Get a query for a model.
	Q(collectionOrModel interface{}, extraModels ...interface{}) *Query

	// Executes a query, fetches ALL results and returns them.
	// If you expect a large number of results, you should use QueryCursor(), which
	// returns an iterable cursor.
	Query(q *Query, targetSlice ...interface{}) ([]interface{}, apperror.Error)

	// Executes a query, and returns a cursor.
	QueryCursor(q *Query) (Cursor, apperror.Error)

	// Perform a query and get the first result.
	QueryOne(q *Query, targetModel ...interface{}) (interface{}, apperror.Error)

	// Perform a query and get the last result.
	Last(q *Query, targetModel ...interface{}) (interface{}, apperror.Error)

	// Find first model with primary key Id.
	FindBy(collection, field string, value interface{}, targetSlice ...interface{}) ([]interface{}, apperror.Error)

	// Find a model in a collection by Id.
	FindOne(collection string, id interface{}, targetModel ...interface{}) (interface{}, apperror.Error)

	// Find a model  in a collection based on a field value.
	FindOneBy(collection, field string, value interface{}, targetModel ...interface{}) (interface{}, apperror.Error)

	// Retrieve the count for a query.
	Count(*Query) (int, apperror.Error)

	// Pluck retrieves all fields specified on a query, and returns them as a
	// map.
	Pluck(q *Query) ([]map[string]interface{}, apperror.Error)

	// Based on a RelationQuery, return a query for the specified
	// relation.
	BuildRelationQuery(q *RelationQuery) (*Query, apperror.Error)

	// Retrieve a query for a relationship.
	Related(model interface{}, name string) (*RelationQuery, apperror.Error)

	// Return a M2MCollection instance for a model, which allows
	// to add/remove/clear items in the m2m relationship.
	M2M(model interface{}, name string) (M2MCollection, apperror.Error)

	// Create creates the model in the backend.
	Create(model ...interface{}) apperror.Error

	CreateByMap(collection string, data map[string]interface{}) (result interface{}, err apperror.Error)

	// Update a model.
	Update(model interface{}) apperror.Error

	// Save is a convenience method that created the passed model if it
	// is new, or updates it otherwise.
	Save(model interface{}) apperror.Error

	// Updat all models matching a query by values in a map.
	UpdateByMap(query *Query, data map[string]interface{}) apperror.Error

	// Delete deletes the model from the backend.
	Delete(model interface{}) apperror.Error

	// DeleteQ deletes all models that match the passed query.
	DeleteMany(*Query) apperror.Error
}

type BaseBackend 

type BaseBackend struct {
	// contains filtered or unexported fields
}

func NewBaseBackend 

func NewBaseBackend(backend Backend) BaseBackend

func (*BaseBackend) Build 

func (b *BaseBackend) Build()

func (*BaseBackend) BuildJoins 

func (b *BaseBackend) BuildJoins(info *ModelInfo, q *Query) apperror.Error

func (*BaseBackend) BuildLogger 

func (b *BaseBackend) BuildLogger()

func (*BaseBackend) BuildRelationQuery 

func (b *BaseBackend) BuildRelationQuery(q *RelationQuery) (*Query, apperror.Error)

func (*BaseBackend) Clone 

func (b *BaseBackend) Clone() *BaseBackend

func (*BaseBackend) Count 

func (b *BaseBackend) Count(q *Query) (int, apperror.Error)

func (*BaseBackend) Create 

func (b *BaseBackend) Create(models ...interface{}) apperror.Error

func (*BaseBackend) CreateByMap 

func (b *BaseBackend) CreateByMap(collection string, data map[string]interface{}) (interface{}, apperror.Error)

func (*BaseBackend) CreateCollection 

func (b *BaseBackend) CreateCollection(collections ...string) apperror.Error

func (*BaseBackend) CreateField 

func (b *BaseBackend) CreateField(collection, fieldName string) apperror.Error

func (*BaseBackend) CreateIndex 

func (b *BaseBackend) CreateIndex(collection, indexName string, unique bool, fields ...string) apperror.Error

func (*BaseBackend) Debug 

func (b *BaseBackend) Debug() bool

func (*BaseBackend) Delete 

func (b *BaseBackend) Delete(model interface{}) apperror.Error

func (*BaseBackend) DeleteMany 

func (b *BaseBackend) DeleteMany(query *Query) apperror.Error

func (*BaseBackend) DisableProfiling 

func (b *BaseBackend) DisableProfiling()

func (*BaseBackend) DoJoin 

func (b *BaseBackend) DoJoin(baseInfo *ModelInfo, objs []interface{}, joinQ *RelationQuery) apperror.Error

func (*BaseBackend) DoJoins 

func (b *BaseBackend) DoJoins(baseInfo *ModelInfo, q *Query, models []interface{}) apperror.Error

func (*BaseBackend) DropAllCollections 

func (b *BaseBackend) DropAllCollections() apperror.Error

func (*BaseBackend) DropCollection 

func (b *BaseBackend) DropCollection(collection string, ifExists, cascade bool) apperror.Error

func (*BaseBackend) DropField 

func (b *BaseBackend) DropField(collection, field string) apperror.Error

func (*BaseBackend) DropIndex 

func (b *BaseBackend) DropIndex(indexName string) apperror.Error

func (*BaseBackend) EnableProfiling 

func (b *BaseBackend) EnableProfiling()

func (*BaseBackend) FindBy 

func (b *BaseBackend) FindBy(collection, field string, value interface{}, targetSlice ...interface{}) ([]interface{}, apperror.Error)

func (*BaseBackend) FindOne 

func (b *BaseBackend) FindOne(collection string, id interface{}, targetModel ...interface{}) (interface{}, apperror.Error)

func (*BaseBackend) FindOneBy 

func (b *BaseBackend) FindOneBy(collection, field string, value interface{}, targetModel ...interface{}) (interface{}, apperror.Error)

func (*BaseBackend) GetHooks 

func (b *BaseBackend) GetHooks(hook string) []HookHandler

func (*BaseBackend) HasCollection 

func (b *BaseBackend) HasCollection(collection string) bool

func (*BaseBackend) HasNativeJoins 

func (b *BaseBackend) HasNativeJoins() bool

func (*BaseBackend) InfoForModel 

func (b *BaseBackend) InfoForModel(model interface{}) (*ModelInfo, apperror.Error)

func (*BaseBackend) Last 

func (b *BaseBackend) Last(q *Query, targetModels ...interface{}) (interface{}, apperror.Error)

func (*BaseBackend) Logger 

func (b *BaseBackend) Logger() *logrus.Logger

func (*BaseBackend) M2M 

func (b *BaseBackend) M2M(model interface{}, name string) (M2MCollection, apperror.Error)

func (*BaseBackend) ModelInfo 

func (b *BaseBackend) ModelInfo(collection string) *ModelInfo

func (*BaseBackend) ModelInfos 

func (b *BaseBackend) ModelInfos() ModelInfos

func (*BaseBackend) ModelToMap 

func (b *BaseBackend) ModelToMap(model interface{}, marshal bool, includeRelations bool) (map[string]interface{}, apperror.Error)

func (*BaseBackend) Name 

func (b *BaseBackend) Name() string

func (*BaseBackend) NewModel 

func (b *BaseBackend) NewModel(collection string) (interface{}, apperror.Error)

func (*BaseBackend) NewModelQuery 

func (b *BaseBackend) NewModelQuery(model interface{}) (*Query, apperror.Error)

func (*BaseBackend) NewModelSlice 

func (b *BaseBackend) NewModelSlice(collection string) (interface{}, apperror.Error)

func (*BaseBackend) NewQuery 

func (b *BaseBackend) NewQuery(collection string) (*Query, apperror.Error)

func (*BaseBackend) PersistRelations 

func (b *BaseBackend) PersistRelations(action string, beforePersist bool, info *ModelInfo, model interface{}) apperror.Error

action may be either "create", "update" or "delete"

func (*BaseBackend) Pluck 

func (b *BaseBackend) Pluck(q *Query) ([]map[string]interface{}, apperror.Error)

func (*BaseBackend) ProfilingEnabled 

func (b *BaseBackend) ProfilingEnabled() bool

func (*BaseBackend) Q 

func (b *BaseBackend) Q(arg interface{}, args ...interface{}) *Query

func (*BaseBackend) Query 

func (b *BaseBackend) Query(q *Query, targetSlice ...interface{}) ([]interface{}, apperror.Error)

func (*BaseBackend) QueryCursor 

func (b *BaseBackend) QueryCursor(q *Query) (Cursor, apperror.Error)

func (*BaseBackend) QueryOne 

func (b *BaseBackend) QueryOne(q *Query, targetModels ...interface{}) (interface{}, apperror.Error)

func (*BaseBackend) RegisterHook 

func (b *BaseBackend) RegisterHook(hook string, handler HookHandler)

func (*BaseBackend) RegisterModel 

func (b *BaseBackend) RegisterModel(model interface{}) *ModelInfo

func (*BaseBackend) Related 

func (b *BaseBackend) Related(model interface{}, name string) (*RelationQuery, apperror.Error)

func (*BaseBackend) RenameCollection 

func (b *BaseBackend) RenameCollection(collection, newName string) apperror.Error

func (*BaseBackend) RenameField 

func (b *BaseBackend) RenameField(collection, field, newName string) apperror.Error

func (*BaseBackend) Save 

func (b *BaseBackend) Save(model interface{}) apperror.Error

func (*BaseBackend) SetDebug 

func (b *BaseBackend) SetDebug(x bool)

func (*BaseBackend) SetLogger 

func (b *BaseBackend) SetLogger(x *logrus.Logger)

func (*BaseBackend) SetName 

func (b *BaseBackend) SetName(name string)

func (*BaseBackend) Update 

func (b *BaseBackend) Update(model interface{}) apperror.Error

func (*BaseBackend) UpdateByMap 

func (b *BaseBackend) UpdateByMap(query *Query, data map[string]interface{}) apperror.Error

type BaseMigrationAttempt 

type BaseMigrationAttempt struct {
	Version    int
	StartedAt  time.Time
	FinishedAt time.Time
	Complete   bool
}

func (BaseMigrationAttempt) Collection 

func (m BaseMigrationAttempt) Collection() string

func (*BaseMigrationAttempt) GetComplete 

func (a *BaseMigrationAttempt) GetComplete() bool

func (*BaseMigrationAttempt) GetFinishedAt 

func (a *BaseMigrationAttempt) GetFinishedAt() time.Time

func (*BaseMigrationAttempt) GetStartedAt 

func (a *BaseMigrationAttempt) GetStartedAt() time.Time

func (*BaseMigrationAttempt) GetVersion 

func (a *BaseMigrationAttempt) GetVersion() int

func (*BaseMigrationAttempt) SetComplete 

func (a *BaseMigrationAttempt) SetComplete(x bool)

func (*BaseMigrationAttempt) SetFinishedAt 

func (a *BaseMigrationAttempt) SetFinishedAt(x time.Time)

func (*BaseMigrationAttempt) SetStartedAt 

func (a *BaseMigrationAttempt) SetStartedAt(x time.Time)

func (*BaseMigrationAttempt) SetVersion 

func (a *BaseMigrationAttempt) SetVersion(x int)

type BaseMigrationAttemptIntId 

type BaseMigrationAttemptIntId struct {
	BaseMigrationAttempt
	Id uint64
}

func (*BaseMigrationAttemptIntId) GetId 

func (a *BaseMigrationAttemptIntId) GetId() string

func (*BaseMigrationAttemptIntId) SetId 

func (a *BaseMigrationAttemptIntId) SetId(x string) error

type Cursor 

type Cursor interface {
	// Count returns the total number of items.
	Count() int

	// HasNext returns true if a next item exists.
	HasNext() bool

	// Retrieve the next result item.
	//
	// As with other query methods, you may pass a pointer to the model
	// that should be filled with the data.
	Next(targetModel ...interface{}) (interface{}, apperror.Error)
}

type DefaultM2MCollection 

type DefaultM2MCollection struct {
	// contains filtered or unexported fields
}

func (*DefaultM2MCollection) Add 

func (c *DefaultM2MCollection) Add(models ...interface{}) apperror.Error

func (*DefaultM2MCollection) All 

func (c *DefaultM2MCollection) All() ([]interface{}, apperror.Error)

func (*DefaultM2MCollection) Clear 

func (c *DefaultM2MCollection) Clear() apperror.Error

func (*DefaultM2MCollection) Contains 

func (c *DefaultM2MCollection) Contains(model interface{}) (bool, apperror.Error)

func (*DefaultM2MCollection) ContainsId 

func (c *DefaultM2MCollection) ContainsId(id interface{}) (bool, apperror.Error)

func (*DefaultM2MCollection) Count 

func (c *DefaultM2MCollection) Count() (int, apperror.Error)

func (*DefaultM2MCollection) Q 

func (c *DefaultM2MCollection) Q() *Query

func (*DefaultM2MCollection) Remove 

func (c *DefaultM2MCollection) Remove(models ...interface{}) apperror.Error

func (*DefaultM2MCollection) Replace 

func (c *DefaultM2MCollection) Replace(models ...interface{}) apperror.Error

type Field 

type Field struct {
	// contains filtered or unexported fields
}

func (*Field) BackendName 

func (f *Field) BackendName() string

func (*Field) EmbeddingStructName 

func (f *Field) EmbeddingStructName() string

func (*Field) IsRequired 

func (f *Field) IsRequired() bool

func (*Field) MarshalName 

func (f *Field) MarshalName() string

func (*Field) Name 

func (f *Field) Name() string

func (*Field) SetBackendName 

func (f *Field) SetBackendName(val string)

func (*Field) SetEmbeddingStructName 

func (f *Field) SetEmbeddingStructName(val string)

func (*Field) SetIsRequired 

func (f *Field) SetIsRequired(val bool)

func (*Field) SetMarshalName 

func (f *Field) SetMarshalName(val string)

func (*Field) SetName 

func (f *Field) SetName(val string)

func (*Field) SetStructName 

func (f *Field) SetStructName(val string)

func (*Field) SetStructType 

func (f *Field) SetStructType(x reflect.Type)

func (*Field) SetType 

func (f *Field) SetType(val reflect.Type)

func (*Field) StructName 

func (f *Field) StructName() string

func (*Field) StructType 

func (f *Field) StructType() reflect.Type

func (*Field) Type 

func (f *Field) Type() reflect.Type

type HookHandler 

type HookHandler func(backend Backend, obj interface{}) apperror.Error

type IntIdModel 

type IntIdModel struct {
	Id uint64
}

Base model with a integer Id.

func (*IntIdModel) GetId 

func (m *IntIdModel) GetId() interface{}

func (*IntIdModel) GetStrId 

func (m *IntIdModel) GetStrId() string

func (*IntIdModel) SetId 

func (m *IntIdModel) SetId(id interface{}) error

func (*IntIdModel) SetStrId 

func (m *IntIdModel) SetStrId(rawId string) error

type JoinAssigner 

type JoinAssigner func(relation *Relation, joinQ *RelationQuery, resultQuery *Query, objs, joinedModels []interface{})

type M2MCollection 

type M2MCollection interface {
	Add(models ...interface{}) apperror.Error
	Remove(models ...interface{}) apperror.Error
	Clear() apperror.Error
	Replace(models ...interface{}) apperror.Error

	Count() (int, apperror.Error)
	Contains(model interface{}) (bool, apperror.Error)
	ContainsId(id interface{}) (bool, apperror.Error)
	All() ([]interface{}, apperror.Error)

	Q() *Query
}

func NewM2MCollection 

func NewM2MCollection(backend Backend, relation *Relation, model interface{}) (M2MCollection, apperror.Error)

type Migration 

type Migration struct {
	Version     int
	Name        string
	Description string
	SkipOnNew   bool // Determines if this migration can be skipped if setting up a new database.

	// WrapTransaction specifies if the whole migration should be wrapped in a transaction.
	WrapTransaction bool
	Up              func(MigrationBackend) error
	Down            func(MigrationBackend) error
}

type MigrationAttempt 

type MigrationAttempt interface {
	GetVersion() int
	SetVersion(int)

	GetStartedAt() time.Time
	SetStartedAt(time.Time)

	GetFinishedAt() time.Time
	SetFinishedAt(time.Time)

	GetComplete() bool
	SetComplete(bool)
}

type MigrationBackend 

type MigrationBackend interface {
	Backend
	GetMigrationHandler() *MigrationHandler

	MigrationsSetup() apperror.Error

	IsMigrationLocked() (bool, apperror.Error)
	DetermineMigrationVersion() (int, apperror.Error)

	NewMigrationAttempt() MigrationAttempt
}

type MigrationHandler 

type MigrationHandler struct {
	Backend MigrationBackend
	// contains filtered or unexported fields
}

func NewMigrationHandler 

func NewMigrationHandler(backend Backend) *MigrationHandler

func (*MigrationHandler) Add 

func (m *MigrationHandler) Add(migrations ...Migration)

func (*MigrationHandler) Get 

func (m *MigrationHandler) Get(version int) *Migration

func (*MigrationHandler) HasMigration 

func (m *MigrationHandler) HasMigration(version int) bool

func (*MigrationHandler) Migrate 

func (m *MigrationHandler) Migrate(force bool) apperror.Error

func (*MigrationHandler) MigrateTo 

func (m *MigrationHandler) MigrateTo(targetVersion int, force bool) apperror.Error

func (*MigrationHandler) RunMigration 

func (handler *MigrationHandler) RunMigration(m *Migration) apperror.Error

type ModelAfterCreateHook 

type ModelAfterCreateHook interface {
	AfterCreate(Backend)
}

type ModelAfterDeleteHook 

type ModelAfterDeleteHook interface {
	AfterDelete(Backend)
}

type ModelAfterQueryHook 

type ModelAfterQueryHook interface {
	AfterQuery(Backend)
}

type ModelAfterUpdateHook 

type ModelAfterUpdateHook interface {
	AfterUpdate(Backend)
}

type ModelBackendNameHook 

type ModelBackendNameHook interface {
	BackendName() string
}

type ModelBeforeCreateHook 

type ModelBeforeCreateHook interface {
	BeforeCreate(Backend) error
}

type ModelBeforeDeleteHook 

type ModelBeforeDeleteHook interface {
	BeforeDelete(Backend) error
}

type ModelBeforeUpdateHook 

type ModelBeforeUpdateHook interface {
	BeforeUpdate(Backend) error
}

type ModelCollectionHook 

type ModelCollectionHook interface {
	Collection() string
}

type ModelIdGetterHook 

type ModelIdGetterHook interface {
	GetId() interface{}
}

type ModelIdSetterHook 

type ModelIdSetterHook interface {
	SetId(id interface{}) error
}

type ModelInfo 

type ModelInfo struct {
	// contains filtered or unexported fields
}

func BuildModelInfo 

func BuildModelInfo(model interface{}) (*ModelInfo, apperror.Error)

Builds the ModelInfo for a model and returns it.

func (*ModelInfo) AddAttribute 

func (m *ModelInfo) AddAttribute(attr *Attribute)

func (*ModelInfo) AddRelation 

func (m *ModelInfo) AddRelation(rel *Relation)

func (*ModelInfo) Attribute 

func (m *ModelInfo) Attribute(name string) *Attribute

func (*ModelInfo) Attributes 

func (m *ModelInfo) Attributes() map[string]*Attribute

func (*ModelInfo) BackendName 

func (m *ModelInfo) BackendName() string

func (*ModelInfo) BuildCreateStmt 

func (info *ModelInfo) BuildCreateStmt(withReferences bool) *CreateCollectionStmt

func (*ModelInfo) Collection 

func (m *ModelInfo) Collection() string

func (*ModelInfo) DetermineModelId 

func (info *ModelInfo) DetermineModelId(model interface{}) (interface{}, apperror.Error)

func (*ModelInfo) DetermineModelStrId 

func (info *ModelInfo) DetermineModelStrId(model interface{}) (string, apperror.Error)

Determine the Id for a model and convert it to string.

func (*ModelInfo) FindAttribute 

func (m *ModelInfo) FindAttribute(name string) *Attribute

FindField tries to find a field by checking its Name, BackendName and MarshalName.

func (*ModelInfo) FindRelation 

func (m *ModelInfo) FindRelation(name string) *Relation

func (*ModelInfo) FullStructName 

func (m *ModelInfo) FullStructName() string

func (*ModelInfo) HasAttribute 

func (m *ModelInfo) HasAttribute(name string) bool

func (*ModelInfo) HasRelation 

func (m *ModelInfo) HasRelation(name string) bool

func (*ModelInfo) HasStruct 

func (m *ModelInfo) HasStruct() bool

func (*ModelInfo) Item 

func (m *ModelInfo) Item() interface{}

func (*ModelInfo) MarshalName 

func (m *ModelInfo) MarshalName() string

func (*ModelInfo) ModelDeleteStmt 

func (info *ModelInfo) ModelDeleteStmt(model interface{}) *DeleteStmt

func (*ModelInfo) ModelFilter 

func (info *ModelInfo) ModelFilter(model interface{}) Expression

func (*ModelInfo) ModelFromMap 

func (info *ModelInfo) ModelFromMap(data map[string]interface{}) (interface{}, apperror.Error)

ModelFromMap creates a new model, fills it with data from the map, and returns a pointer to the new model struct. Data may contain the struct field names, the backend names or the marshal names as keys.

func (*ModelInfo) ModelHasId 

func (info *ModelInfo) ModelHasId(model interface{}) (bool, apperror.Error)

func (*ModelInfo) ModelSelect 

func (info *ModelInfo) ModelSelect(model interface{}) *SelectStmt

func (*ModelInfo) ModelToFieldExpressions 

func (info *ModelInfo) ModelToFieldExpressions(model interface{}) ([]*FieldValueExpr, apperror.Error)

func (*ModelInfo) ModelToMap 

func (info *ModelInfo) ModelToMap(model interface{}, forBackend, marshal bool, includeRelations bool) (map[string]interface{}, apperror.Error)

func (*ModelInfo) MustDetermineModelId 

func (info *ModelInfo) MustDetermineModelId(model interface{}) interface{}

func (*ModelInfo) MustDetermineModelStrId 

func (info *ModelInfo) MustDetermineModelStrId(model interface{}) string

Determine the Id for a model and convert it to string. Panics on error.

func (*ModelInfo) New 

func (m *ModelInfo) New() interface{}

func (*ModelInfo) NewReflector 

func (m *ModelInfo) NewReflector() *reflector.StructReflector

func (*ModelInfo) NewSlice 

func (m *ModelInfo) NewSlice() *reflector.SliceReflector

func (*ModelInfo) PkAttribute 

func (m *ModelInfo) PkAttribute() *Attribute

func (*ModelInfo) Reflector 

func (m *ModelInfo) Reflector() *reflector.StructReflector

func (*ModelInfo) Relation 

func (m *ModelInfo) Relation(name string) *Relation

func (*ModelInfo) Relations 

func (m *ModelInfo) Relations() map[string]*Relation

*

  • Relations.

func (*ModelInfo) SetAttributes 

func (m *ModelInfo) SetAttributes(attrs map[string]*Attribute)

func (*ModelInfo) SetBackendName 

func (m *ModelInfo) SetBackendName(val string)

func (*ModelInfo) SetCollection 

func (m *ModelInfo) SetCollection(val string)

func (*ModelInfo) SetFullStructName 

func (m *ModelInfo) SetFullStructName(val string)

func (*ModelInfo) SetItem 

func (m *ModelInfo) SetItem(val interface{})

func (*ModelInfo) SetMarshalName 

func (m *ModelInfo) SetMarshalName(val string)

func (*ModelInfo) SetModelId 

func (info *ModelInfo) SetModelId(model, id interface{}) apperror.Error

func (*ModelInfo) SetRelations 

func (m *ModelInfo) SetRelations(rels map[string]*Relation)

func (*ModelInfo) SetStructName 

func (m *ModelInfo) SetStructName(val string)

func (*ModelInfo) SetTransientFields 

func (m *ModelInfo) SetTransientFields(x map[string]*Field)

func (*ModelInfo) StructName 

func (m *ModelInfo) StructName() string

func (*ModelInfo) TransientFields 

func (m *ModelInfo) TransientFields() map[string]*Field

func (*ModelInfo) UpdateModelFromData 

func (info *ModelInfo) UpdateModelFromData(model interface{}, data map[string]interface{}) apperror.Error

func (*ModelInfo) ValidateModel 

func (info *ModelInfo) ValidateModel(m interface{}) apperror.Error

type ModelInfos 

type ModelInfos map[string]*ModelInfo

func (ModelInfos) Add 

func (i ModelInfos) Add(info *ModelInfo)

func (ModelInfos) AnalyzeRelations 

func (m ModelInfos) AnalyzeRelations() apperror.Error

func (ModelInfos) Find 

func (i ModelInfos) Find(name string) *ModelInfo

func (ModelInfos) Get 

func (i ModelInfos) Get(collection string) *ModelInfo

func (ModelInfos) Has 

func (i ModelInfos) Has(collection string) bool

type ModelMarshalNameHook 

type ModelMarshalNameHook interface {
	MarshalName() string
}

type ModelStrIdGetterHook 

type ModelStrIdGetterHook interface {
	GetStrId() string
}

type ModelStrIdSetterHook 

type ModelStrIdSetterHook interface {
	SetStrId(id string) error
}

type ModelValidateHook 

type ModelValidateHook interface {
	Validate() error
}

type Point 

type Point struct {
	Lat float32
	Lon float32
}

type Query 

type Query struct {
	// contains filtered or unexported fields
}

func NewQuery 

func NewQuery(collection string, backend Backend) *Query

func ParseJsonQuery 

func ParseJsonQuery(backend Backend, js []byte) (*Query, apperror.Error)

func ParseQuery 

func ParseQuery(backend Backend, data map[string]interface{}) (*Query, apperror.Error)

Build a database query based a map[string]interface{} data structure resembling a Mongo query.

It returns a Query equal to the Mongo query, with unsupported features omitted. An error is returned if the building of the query fails. 

Format: {
  // Order by field:
  order: "field",
 //  Order descending:
 order: "-field",

 // Joins:
 joins: ["myJoin", "my.nestedJoin"],

 // Filters:
 Filters conform to the mongo query syntax.
 See http://docs.mongodb.org/manual/reference/operator/query/.
 filters: {
 	id: "22",
   weight: {$gt: 222},
   type: {$in: ["type1", "type2"]}
 },

 // Limiting:
 limit: 100,

 // Offset:
 offset: 20
}

func (*Query) And 

func (q *Query) And(field string, val interface{}) *Query

func (*Query) AndCond 

func (q *Query) AndCond(field, condition string, val interface{}) *Query

func (*Query) AndExpr 

func (q *Query) AndExpr(filters ...Expression) *Query

func (*Query) Count 

func (q *Query) Count() (int, apperror.Error)

func (*Query) Delete 

func (q *Query) Delete() apperror.Error

func (*Query) Field 

func (q *Query) Field(fields ...string) *Query

func (*Query) FieldExpr 

func (q *Query) FieldExpr(exprs ...Expression) *Query

func (*Query) Filter 

func (q *Query) Filter(field string, val interface{}) *Query

func (*Query) FilterCond 

func (q *Query) FilterCond(field string, condition string, val interface{}) *Query

func (*Query) FilterExpr 

func (q *Query) FilterExpr(expressions ...Expression) *Query

func (*Query) Find 

func (q *Query) Find(targetSlice ...interface{}) ([]interface{}, apperror.Error)

func (*Query) First 

func (q *Query) First(targetModel ...interface{}) (interface{}, apperror.Error)

func (*Query) GetBackend 

func (q *Query) GetBackend() Backend

func (*Query) GetCollection 

func (q *Query) GetCollection() string

func (*Query) GetJoin 

func (q *Query) GetJoin(relationName string) *RelationQuery

Retrieve a join query for the specified field. Returns a *RelationQuery, or nil if not found. Supports nested Joins like 'Parent.Tags'.

func (*Query) GetJoinResultAssigner 

func (q *Query) GetJoinResultAssigner() JoinAssigner

func (*Query) GetJoins 

func (q *Query) GetJoins() map[string]*RelationQuery

func (*Query) GetLimit 

func (q *Query) GetLimit() int

func (*Query) GetModels 

func (q *Query) GetModels() []interface{}

func (*Query) GetName 

func (q *Query) GetName() string

func (*Query) GetOffset 

func (q *Query) GetOffset() int

func (*Query) GetStatement 

func (q *Query) GetStatement() *SelectStmt

func (*Query) HasJoin 

func (q *Query) HasJoin(relationName string) bool

func (*Query) Join 

func (q *Query) Join(relationName string, joinType ...string) *Query

func (*Query) JoinQ 

func (q *Query) JoinQ(jqs ...*RelationQuery) *Query

func (*Query) Last 

func (q *Query) Last(targetModel ...interface{}) (interface{}, apperror.Error)

func (*Query) Limit 

func (q *Query) Limit(limit int) *Query

func (*Query) Name 

func (q *Query) Name(x string) *Query

func (*Query) Normalize 

func (q *Query) Normalize() apperror.Error

func (*Query) Not 

func (q *Query) Not(field string, val interface{}) *Query

func (*Query) NotCond 

func (q *Query) NotCond(field string, condition string, val interface{}) *Query

func (*Query) NotExpr 

func (q *Query) NotExpr(filters ...Expression) *Query

func (*Query) Offset 

func (q *Query) Offset(offset int) *Query

func (*Query) Or 

func (q *Query) Or(field string, val interface{}) *Query

func (*Query) OrCond 

func (q *Query) OrCond(field string, condition string, val interface{}) *Query

func (*Query) OrExpr 

func (q *Query) OrExpr(filters ...Expression) *Query

func (*Query) Pluck 

func (q *Query) Pluck() ([]map[string]interface{}, apperror.Error)

func (*Query) Related 

func (q *Query) Related(name string) *RelationQuery

func (*Query) SetBackend 

func (q *Query) SetBackend(x Backend)

func (*Query) SetCollection 

func (q *Query) SetCollection(collection string)

func (*Query) SetFieldExpressions 

func (q *Query) SetFieldExpressions(expressions []Expression) *Query

func (*Query) SetFields 

func (q *Query) SetFields(fields []string) *Query

func (*Query) SetFilters 

func (q *Query) SetFilters(expressions ...Expression) *Query

func (*Query) SetJoinResultAssigner 

func (q *Query) SetJoinResultAssigner(x JoinAssigner)

func (*Query) SetModels 

func (q *Query) SetModels(x []interface{})

func (*Query) SetName 

func (q *Query) SetName(name string)

func (*Query) SetSorts 

func (q *Query) SetSorts(exprs []*SortExpr) *Query

func (*Query) SetStatement 

func (q *Query) SetStatement(stmt *SelectStmt)

func (*Query) Sort 

func (q *Query) Sort(field string, asc bool) *Query

func (*Query) SortExpr 

func (q *Query) SortExpr(expr *SortExpr) *Query

type QueryStat 

type QueryStat struct {
	Name        string
	Started     time.Time
	Finished    time.Time
	Total       time.Duration
	Normalizing time.Duration
	Joining     time.Duration
	Execution   time.Duration
	ModelBuild  time.Duration
}

type Relation 

type Relation struct {
	// Embed field.
	Field
	// contains filtered or unexported fields
}

func BuildRelation 

func BuildRelation(field *Field) *Relation

buildRelation builds up a relation based on a field.

func (*Relation) AutoCreate 

func (r *Relation) AutoCreate() bool

func (*Relation) AutoDelete 

func (r *Relation) AutoDelete() bool

func (*Relation) AutoUpdate 

func (r *Relation) AutoUpdate() bool

func (*Relation) ForeignField 

func (r *Relation) ForeignField() string

func (*Relation) InversingField 

func (r *Relation) InversingField() string

func (*Relation) IsMany 

func (f *Relation) IsMany() bool

func (*Relation) LocalField 

func (r *Relation) LocalField() string

func (*Relation) Model 

func (r *Relation) Model() *ModelInfo

func (*Relation) RelatedModel 

func (r *Relation) RelatedModel() *ModelInfo

func (*Relation) RelationType 

func (r *Relation) RelationType() string

func (*Relation) SetAutoCreate 

func (r *Relation) SetAutoCreate(val bool)

func (*Relation) SetAutoDelete 

func (r *Relation) SetAutoDelete(val bool)

func (*Relation) SetAutoUpdate 

func (r *Relation) SetAutoUpdate(val bool)

func (*Relation) SetForeignField 

func (r *Relation) SetForeignField(val string)

func (*Relation) SetInversingField 

func (r *Relation) SetInversingField(val string)

func (*Relation) SetLocalField 

func (r *Relation) SetLocalField(val string)

func (*Relation) SetModel 

func (r *Relation) SetModel(val *ModelInfo)

func (*Relation) SetRelatedModel 

func (r *Relation) SetRelatedModel(val *ModelInfo)

func (*Relation) SetRelationType 

func (r *Relation) SetRelationType(val string)

type RelationQuery 

type RelationQuery struct {
	Query
	// contains filtered or unexported fields
}

func RelQ 

func RelQ(q *Query, relationName string, collection string, joinType string) *RelationQuery

func RelQCustom 

func RelQCustom(q *Query, collection, joinKey, foreignKey, typ string) *RelationQuery

Create a new relation query that connects two collections via two of their fields. These will normally be the respective primary keys.

func RelQExpr 

func RelQExpr(q *Query, collection, typ string, joinCondition Expression) *RelationQuery

RelQExpr creates a new relation query for a collection with an arbitrary join condition.

func (*RelationQuery) And 

func (q *RelationQuery) And(field string, val interface{}) *RelationQuery

func (*RelationQuery) AndCond 

func (q *RelationQuery) AndCond(field, condition string, val interface{}) *RelationQuery

func (*RelationQuery) AndExpr 

func (q *RelationQuery) AndExpr(filters ...Expression) *RelationQuery

func (*RelationQuery) Build 

func (q *RelationQuery) Build() (*Query, apperror.Error)

func (*RelationQuery) Count 

func (q *RelationQuery) Count() (int, apperror.Error)

func (*RelationQuery) Delete 

func (q *RelationQuery) Delete() apperror.Error

func (*RelationQuery) Field 

func (q *RelationQuery) Field(fields ...string) *RelationQuery

func (*RelationQuery) FieldExpr 

func (q *RelationQuery) FieldExpr(exprs ...Expression) *RelationQuery

func (*RelationQuery) Filter 

func (q *RelationQuery) Filter(field string, val interface{}) *RelationQuery

func (*RelationQuery) FilterCond 

func (q *RelationQuery) FilterCond(field string, condition string, val interface{}) *RelationQuery

func (*RelationQuery) FilterExpr 

func (q *RelationQuery) FilterExpr(expressions ...Expression) *RelationQuery

func (*RelationQuery) Find 

func (q *RelationQuery) Find(targetSlice ...interface{}) ([]interface{}, apperror.Error)

func (*RelationQuery) First 

func (q *RelationQuery) First(targetModel ...interface{}) (interface{}, apperror.Error)

func (*RelationQuery) GetBaseQuery 

func (q *RelationQuery) GetBaseQuery() *Query

func (*RelationQuery) GetJoinType 

func (q *RelationQuery) GetJoinType() string

func (*RelationQuery) GetRelationName 

func (q *RelationQuery) GetRelationName() string

func (*RelationQuery) GetStatement 

func (q *RelationQuery) GetStatement() *JoinStmt

func (*RelationQuery) Join 

func (q *RelationQuery) Join(fieldName string, joinType ...string) *RelationQuery

func (*RelationQuery) JoinQ 

func (q *RelationQuery) JoinQ(jqs ...*RelationQuery) *RelationQuery

func (*RelationQuery) Last 

func (q *RelationQuery) Last(targetModel ...interface{}) (interface{}, apperror.Error)

func (*RelationQuery) Limit 

func (q *RelationQuery) Limit(l int) *RelationQuery

func (*RelationQuery) Not 

func (q *RelationQuery) Not(field string, val interface{}) *RelationQuery

func (*RelationQuery) NotCond 

func (q *RelationQuery) NotCond(field string, condition string, val interface{}) *RelationQuery

func (*RelationQuery) NotExpr 

func (q *RelationQuery) NotExpr(filters ...Expression) *RelationQuery

func (*RelationQuery) Offset 

func (q *RelationQuery) Offset(o int) *RelationQuery

func (*RelationQuery) Or 

func (q *RelationQuery) Or(field string, val interface{}) *RelationQuery

func (*RelationQuery) OrCond 

func (q *RelationQuery) OrCond(field string, condition string, val interface{}) *RelationQuery

func (*RelationQuery) OrExpr 

func (q *RelationQuery) OrExpr(filters ...Expression) *RelationQuery

func (*RelationQuery) SetBaseQuery 

func (q *RelationQuery) SetBaseQuery(bq *Query)

func (*RelationQuery) SetFieldExpressions 

func (q *RelationQuery) SetFieldExpressions(expressions []Expression) *RelationQuery

func (*RelationQuery) SetFields 

func (q *RelationQuery) SetFields(fields []string) *RelationQuery

func (*RelationQuery) SetFilters 

func (q *RelationQuery) SetFilters(expressions ...Expression) *RelationQuery

func (*RelationQuery) SetJoinType 

func (q *RelationQuery) SetJoinType(typ string) *RelationQuery

func (*RelationQuery) SetRelationName 

func (q *RelationQuery) SetRelationName(name string)

func (*RelationQuery) SetSorts 

func (q *RelationQuery) SetSorts(exprs []*SortExpr) *RelationQuery

func (*RelationQuery) Sort 

func (q *RelationQuery) Sort(name string, asc bool) *RelationQuery

func (*RelationQuery) SortExpr 

func (q *RelationQuery) SortExpr(expr *SortExpr) *RelationQuery

type StrIdModel 

type StrIdModel struct {
	Id string
}

Base model with a string Id.

func (*StrIdModel) GetId 

func (m *StrIdModel) GetId() interface{}

func (*StrIdModel) GetStrId 

func (m *StrIdModel) GetStrId() string

func (*StrIdModel) SetId 

func (m *StrIdModel) SetId(id interface{}) error

func (*StrIdModel) SetStrId 

func (m *StrIdModel) SetStrId(rawId string) error

type TimeStampedModel 

type TimeStampedModel struct {
	CreatedAt time.Time `db:"required"`
	UpdatedAt time.Time `db:"required"`
}

func (*TimeStampedModel) BeforeCreate 

func (m *TimeStampedModel) BeforeCreate(b Backend) error

func (*TimeStampedModel) BeforeUpdate 

func (m *TimeStampedModel) BeforeUpdate(b Backend) error

type Transaction 

type Transaction interface {
	Backend
	Rollback() apperror.Error
	Commit() apperror.Error
}

type TransactionBackend 

type TransactionBackend interface {
	Backend
	Begin() (Transaction, apperror.Error)
	MustBegin() Transaction
}

Source Files

View all Source files

Directories

Path Synopsis
backends
memory
orientdb
orientdb/tests
sql
sql/t
tests
models
govalidate

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