org.datanucleus.metadata
Class UniqueMetaData

java.lang.Object
  org.datanucleus.metadata.MetaData
      org.datanucleus.metadata.AbstractConstraintMetaData
          org.datanucleus.metadata.UniqueMetaData

All Implemented Interfaces:

java.io.Serializable, ColumnMetaDataContainer

public class UniqueMetaData
extends AbstractConstraintMetaData
implements ColumnMetaDataContainer

MetaData representing a unique constraint.

Since:

1.1

Version:

$Revision: 1.17 $

See Also:

Serialized Form

Field Summary

Fields inherited from class org.datanucleus.metadata.AbstractConstraintMetaData

columnMetaData, columns, memberMetaData, members, name, table

Fields inherited from class org.datanucleus.metadata.MetaData

extensions, LOCALISER, METADATA_CREATED_STATE, METADATA_INITIALISED_STATE, METADATA_POPULATED_STATE, METADATA_USED_STATE, metaDataState, parent, VENDOR_NAME, VENDOR_NAME_OLD

Constructor Summary

UniqueMetaData(java.lang.String name, java.lang.String table, java.lang.String deferredValue)
Constructor.

UniqueMetaData(UniqueMetaData umd)
Constructor to create a copy of the passed metadata using the provided parent.

Method Summary

void	initialise() Method to initialise the object, creating internal convenience arrays.
boolean	isDeferred() Accessor for whether the unique constraint is deferred.
java.lang.String	toString(java.lang.String prefix, java.lang.String indent) Returns a string representation of the object.

Methods inherited from class org.datanucleus.metadata.AbstractConstraintMetaData

addColumn, addMember, getColumnMetaData, getMemberMetaData, getName, getNumberOfColumns, getNumberOfMembers, getTable, setName

Methods inherited from class org.datanucleus.metadata.MetaData

addExtension, addExtension, getExtensions, getNoOfExtensions, getParent, getValueForExtension, getValuesForExtension, hasExtension, isInitialised, isPopulated, isUsed, removeExtension, setInitialised, setParent, setPopulated, setUsed, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.datanucleus.metadata.ColumnMetaDataContainer

addColumn, getColumnMetaData

Constructor Detail

UniqueMetaData

public UniqueMetaData(UniqueMetaData umd)

Constructor to create a copy of the passed metadata using the provided parent.

Parameters:

umd - The metadata to copy

UniqueMetaData

public UniqueMetaData(java.lang.String name,
                      java.lang.String table,
                      java.lang.String deferredValue)

Constructor.

Parameters:

name - Name of unique constraint

table - Name of the table

deferredValue - Whether the unique is deferred initially

Method Detail

initialise

public void initialise()

Method to initialise the object, creating internal convenience arrays. Initialise all sub-objects.

Overrides:

initialise in class MetaData

isDeferred

public final boolean isDeferred()

Accessor for whether the unique constraint is deferred.

Returns:

Returns whether the unique constraint is deferred

toString

public java.lang.String toString(java.lang.String prefix,
                                 java.lang.String indent)

Returns a string representation of the object. This can be used as part of a facility to output a MetaData file.

Overrides:

toString in class MetaData

Parameters:

prefix - prefix string

indent - indent string

Returns:

a string representation of the object.