ConstraintReferential (H2 Database Engine wt-1.0.1 API)

java.lang.Object
- org.h2.engine.DbObjectBase
- - org.h2.schema.SchemaObjectBase
  - - org.h2.constraint.Constraint
    - - org.h2.constraint.ConstraintReferential

所有已实现的接口:

Comparable<Constraint>, DbObject, SchemaObject
```
public class ConstraintReferential
extends Constraint
```
A referential constraint.

字段概要

字段
限定符和类型	字段和说明
`static int`	`CASCADE` The action is to cascade the operation.
`static int`	`RESTRICT` The action is to restrict the operation.
`static int`	`SET_DEFAULT` The action is to set the value to the default value.
`static int`	`SET_NULL` The action is to set the value to NULL.

从类继承的字段 org.h2.constraint.Constraint
CHECK, PRIMARY_KEY, REFERENTIAL, table, UNIQUE

从类继承的字段 org.h2.engine.DbObjectBase
comment, database, trace

从接口继承的字段 org.h2.engine.DbObject
AGGREGATE, COMMENT, CONSTANT, CONSTRAINT, FUNCTION_ALIAS, INDEX, RIGHT, ROLE, SCHEMA, SEQUENCE, SETTING, TABLE_OR_VIEW, TRIGGER, USER, USER_DATATYPE

构造器概要

构造器
构造器和说明

ConstraintReferential(Schema schema, int id, String name, Table table)

构造器
构造器和说明
`ConstraintReferential(Schema schema, int id, String name, Table table)`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`checkExistingData(Session session)` Check the existing data.
`void`	`checkRow(Session session, Table t, Row oldRow, Row newRow)` Check if this row fulfils the constraint.
`IndexColumn[]`	`getColumns()`
`String`	`getConstraintType()` The constraint type name
`String`	`getCreateSQL()` Build a SQL statement to re-create this object.
`String`	`getCreateSQLForCopy(Table forTable, String quotedName)` Create the SQL statement of this object so a copy of the table can be made.
`String`	`getCreateSQLForCopy(Table forTable, Table forRefTable, String quotedName, boolean internalIndex)` Create the SQL statement of this object so a copy of the table can be made.
`String`	`getCreateSQLWithoutIndexes()` Get the SQL statement to create this constraint.
`int`	`getDeleteAction()`
`IndexColumn[]`	`getRefColumns()`
`HashSet<Column>`	`getReferencedColumns(Table table)` Get all referenced columns.
`Table`	`getRefTable()`
`Index`	`getUniqueIndex()` Get the unique index used to enforce this constraint, or null if no index is used.
`int`	`getUpdateAction()`
`boolean`	`isBefore()` Check if this constraint needs to be checked before updating the data.
`void`	`rebuild()` This method is called after a related table has changed (the table was renamed, or columns have been renamed).
`void`	`removeChildrenAndResources(Session session)` Remove all dependent objects and free all resources (files, blocks in files) of this object.
`void`	`setColumns(IndexColumn[] cols)`
`void`	`setDeleteAction(int action)` Set the action to apply (restrict, cascade,...) on a delete.
`void`	`setIndex(Index index, boolean isOwner)` Set the index to use for this constraint.
`void`	`setIndexOwner(Index index)` This index is now the owner of the specified index.
`void`	`setRefColumns(IndexColumn[] refCols)`
`void`	`setRefIndex(Index refIndex, boolean isRefOwner)` Set the index of the referenced table to use for this constraint.
`void`	`setRefTable(Table refTable)`
`void`	`setUpdateAction(int action)` Set the action to apply (restrict, cascade,...) on an update.
`boolean`	`usesIndex(Index idx)` Check if this constraint needs the specified index.

从类继承的方法 org.h2.constraint.Constraint
checkRename, compareTo, getDropSQL, getTable, getType, isEverything, isHidden

从类继承的方法 org.h2.schema.SchemaObjectBase
getSchema, getSQL, initSchemaObjectBase

从类继承的方法 org.h2.engine.DbObjectBase
getChildren, getComment, getDatabase, getId, getModificationId, getName, initDbObjectBase, invalidate, isTemporary, isValid, rename, setComment, setModified, setObjectName, setTemporary, toString

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.h2.engine.DbObject
getChildren, getComment, getDatabase, getId, getName, isTemporary, rename, setComment, setTemporary

- 字段详细资料
  - RESTRICT
```
public static final int RESTRICT
```
    The action is to restrict the operation.
    
    另请参阅:
    
    常量字段值
  - CASCADE
```
public static final int CASCADE
```
    The action is to cascade the operation.
    
    另请参阅:
    
    常量字段值
  - SET_DEFAULT
```
public static final int SET_DEFAULT
```
    The action is to set the value to the default value.
    
    另请参阅:
    
    常量字段值
  - SET_NULL
```
public static final int SET_NULL
```
    The action is to set the value to NULL.
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - ConstraintReferential
```
public ConstraintReferential(Schema schema,
                             int id,
                             String name,
                             Table table)
```
- 方法详细资料
  - getConstraintType
```
public String getConstraintType()
```
    从类复制的说明: Constraint
    
    The constraint type name
    
    指定者:
    
    getConstraintType 在类中 Constraint
    
    返回:
    
    the name
  - getCreateSQLForCopy
```
public String getCreateSQLForCopy(Table forTable,
                                  String quotedName)
```
    Create the SQL statement of this object so a copy of the table can be made.
    
    参数:
    
    forTable - the table to create the object for
    
    quotedName - the name of this object (quoted if necessary)
    
    返回:
    
    the SQL statement
  - getCreateSQLForCopy
```
public String getCreateSQLForCopy(Table forTable,
                                  Table forRefTable,
                                  String quotedName,
                                  boolean internalIndex)
```
    Create the SQL statement of this object so a copy of the table can be made.
    
    参数:
    
    forTable - the table to create the object for
    
    forRefTable - the referenced table
    
    quotedName - the name of this object (quoted if necessary)
    
    internalIndex - add the index name to the statement
    
    返回:
    
    the SQL statement
  - getCreateSQLWithoutIndexes
```
public String getCreateSQLWithoutIndexes()
```
    从类复制的说明: Constraint
    
    Get the SQL statement to create this constraint.
    
    指定者:
    
    getCreateSQLWithoutIndexes 在类中 Constraint
    
    返回:
    
    the SQL statement
  - getCreateSQL
```
public String getCreateSQL()
```
    从类复制的说明: DbObjectBase
    
    Build a SQL statement to re-create this object.
    
    指定者:
    
    getCreateSQL 在接口中 DbObject
    
    指定者:
    
    getCreateSQL 在类中 DbObjectBase
    
    返回:
    
    the SQL statement
  - setColumns
```
public void setColumns(IndexColumn[] cols)
```
  - getColumns
```
public IndexColumn[] getColumns()
```
  - getReferencedColumns
```
public HashSet<Column> getReferencedColumns(Table table)
```
    从类复制的说明: Constraint
    
    Get all referenced columns.
    
    指定者:
    
    getReferencedColumns 在类中 Constraint
    
    参数:
    
    table - the table
    
    返回:
    
    the set of referenced columns
  - setRefColumns
```
public void setRefColumns(IndexColumn[] refCols)
```
  - getRefColumns
```
public IndexColumn[] getRefColumns()
```
  - setRefTable
```
public void setRefTable(Table refTable)
```
  - setIndex
```
public void setIndex(Index index,
                     boolean isOwner)
```
    Set the index to use for this constraint.
    
    参数:
    
    index - the index
    
    isOwner - true if the index is generated by the system and belongs to this constraint
  - setRefIndex
```
public void setRefIndex(Index refIndex,
                        boolean isRefOwner)
```
    Set the index of the referenced table to use for this constraint.
    
    参数:
    
    refIndex - the index
    
    isRefOwner - true if the index is generated by the system and belongs to this constraint
  - removeChildrenAndResources
```
public void removeChildrenAndResources(Session session)
```
    从类复制的说明: DbObjectBase
    
    Remove all dependent objects and free all resources (files, blocks in files) of this object.
    
    指定者:
    
    removeChildrenAndResources 在接口中 DbObject
    
    指定者:
    
    removeChildrenAndResources 在类中 DbObjectBase
    
    参数:
    
    session - the session
  - checkRow
```
public void checkRow(Session session,
                     Table t,
                     Row oldRow,
                     Row newRow)
```
    从类复制的说明: Constraint
    
    Check if this row fulfils the constraint. This method throws an exception if not.
    
    指定者:
    
    checkRow 在类中 Constraint
    
    参数:
    
    session - the session
    
    t - the table
    
    oldRow - the old row
    
    newRow - the new row
  - getDeleteAction
```
public int getDeleteAction()
```
  - setDeleteAction
```
public void setDeleteAction(int action)
```
    Set the action to apply (restrict, cascade,...) on a delete.
    
    参数:
    
    action - the action
  - getUpdateAction
```
public int getUpdateAction()
```
  - setUpdateAction
```
public void setUpdateAction(int action)
```
    Set the action to apply (restrict, cascade,...) on an update.
    
    参数:
    
    action - the action
  - rebuild
```
public void rebuild()
```
    从类复制的说明: Constraint
    
    This method is called after a related table has changed (the table was renamed, or columns have been renamed).
    
    指定者:
    
    rebuild 在类中 Constraint
  - getRefTable
```
public Table getRefTable()
```
    覆盖:
    
    getRefTable 在类中 Constraint
  - usesIndex
```
public boolean usesIndex(Index idx)
```
    从类复制的说明: Constraint
    
    Check if this constraint needs the specified index.
    
    指定者:
    
    usesIndex 在类中 Constraint
    
    参数:
    
    idx - the index
    
    返回:
    
    true if the index is used
  - setIndexOwner
```
public void setIndexOwner(Index index)
```
    从类复制的说明: Constraint
    
    This index is now the owner of the specified index.
    
    指定者:
    
    setIndexOwner 在类中 Constraint
    
    参数:
    
    index - the index
  - isBefore
```
public boolean isBefore()
```
    从类复制的说明: Constraint
    
    Check if this constraint needs to be checked before updating the data.
    
    指定者:
    
    isBefore 在类中 Constraint
    
    返回:
    
    true if it must be checked before updating
  - checkExistingData
```
public void checkExistingData(Session session)
```
    从类复制的说明: Constraint
    
    Check the existing data. This method is called if the constraint is added after data has been inserted into the table.
    
    指定者:
    
    checkExistingData 在类中 Constraint
    
    参数:
    
    session - the session
  - getUniqueIndex
```
public Index getUniqueIndex()
```
    从类复制的说明: Constraint
    
    Get the unique index used to enforce this constraint, or null if no index is used.
    
    指定者:
    
    getUniqueIndex 在类中 Constraint
    
    返回:
    
    the index

类 ConstraintReferential

字段概要

从类继承的字段 org.h2.constraint.Constraint

从类继承的字段 org.h2.engine.DbObjectBase

从接口继承的字段 org.h2.engine.DbObject

构造器概要

方法概要

从类继承的方法 org.h2.constraint.Constraint

从类继承的方法 org.h2.schema.SchemaObjectBase

从类继承的方法 org.h2.engine.DbObjectBase

从类继承的方法 java.lang.Object

从接口继承的方法 org.h2.engine.DbObject

字段详细资料

RESTRICT

CASCADE

SET_DEFAULT

SET_NULL

构造器详细资料

ConstraintReferential

方法详细资料

getConstraintType

getCreateSQLForCopy

getCreateSQLForCopy

getCreateSQLWithoutIndexes

getCreateSQL

setColumns

getColumns

getReferencedColumns

setRefColumns

getRefColumns

setRefTable

setIndex

setRefIndex

removeChildrenAndResources

checkRow

getDeleteAction

setDeleteAction

getUpdateAction

setUpdateAction

rebuild

getRefTable

usesIndex

setIndexOwner

isBefore

checkExistingData

getUniqueIndex