org.apache.cayenne.query
Class UpdateQuery

java.lang.Object
  org.apache.cayenne.query.AbstractQuery
      org.apache.cayenne.query.QualifiedQuery
          org.apache.cayenne.query.UpdateQuery

All Implemented Interfaces:

java.io.Serializable, Query

public class UpdateQuery
extends QualifiedQuery

Object encapsulating an UPDATE statement. Note that updated attributes are expressed in terms of DbAttribute names.

See Also:

Serialized Form

Field Summary

protected java.util.Map

updAttributes

Fields inherited from class org.apache.cayenne.query.QualifiedQuery

qualifier

Fields inherited from class org.apache.cayenne.query.AbstractQuery

name, root

Constructor Summary

UpdateQuery()
Creates empty UpdateQuery.

UpdateQuery(java.lang.Class rootClass)
Creates a UpdateQuery with null qualifier, for the entity which uses the given class.

UpdateQuery(java.lang.Class rootClass, Expression qualifier)
Creates a UpdateQuery for the entity which uses the given class, with the given qualifier.

UpdateQuery(ObjEntity root)
Creates a UpdateQuery with null qualifier, for the specifed ObjEntity

UpdateQuery(ObjEntity root, Expression qualifier)
Creates a UpdateQuery for the specifed ObjEntity with the given qualifier

UpdateQuery(java.lang.String objEntityName)
Creates UpdateQuery with objEntityName parameter.

UpdateQuery(java.lang.String objEntityName, Expression qualifier)
Creates UpdateQuery with objEntityName and qualifier parameters.

Method Summary

void	addUpdAttribute(java.lang.String attrName, java.lang.Object updatedValue)
SQLAction	createSQLAction(SQLActionVisitor visitor) Calls "makeUpdate" on the visitor.
java.util.Map	getUpdAttributes() Returns a map of updated attributes

Methods inherited from class org.apache.cayenne.query.QualifiedQuery

andQualifier, getQualifier, orQualifier, setQualifier

Methods inherited from class org.apache.cayenne.query.AbstractQuery

getMetaData, getName, getRoot, route, setName, setRoot, toString

Methods inherited from class java.lang.Object

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

Field Detail

updAttributes

protected java.util.Map updAttributes

Constructor Detail

UpdateQuery

public UpdateQuery()

Creates empty UpdateQuery.

UpdateQuery

public UpdateQuery(ObjEntity root)

Creates a UpdateQuery with null qualifier, for the specifed ObjEntity

Parameters:

root - the ObjEntity this UpdateQuery is for.

UpdateQuery

public UpdateQuery(ObjEntity root,
                   Expression qualifier)

Creates a UpdateQuery for the specifed ObjEntity with the given qualifier

Parameters:

root - the ObjEntity this UpdateQuery is for.

qualifier - an Expression indicating which objects will be updated

UpdateQuery

public UpdateQuery(java.lang.Class rootClass)

Creates a UpdateQuery with null qualifier, for the entity which uses the given class.

Parameters:

rootClass - the Class of objects this UpdateQuery is for.

UpdateQuery

public UpdateQuery(java.lang.Class rootClass,
                   Expression qualifier)

Creates a UpdateQuery for the entity which uses the given class, with the given qualifier.

Parameters:

rootClass - the Class of objects this UpdateQuery is for.

qualifier - an Expression indicating which objects will be updated

UpdateQuery

public UpdateQuery(java.lang.String objEntityName)

Creates UpdateQuery with objEntityName parameter.

UpdateQuery

public UpdateQuery(java.lang.String objEntityName,
                   Expression qualifier)

Creates UpdateQuery with objEntityName and qualifier parameters.

Method Detail

createSQLAction

public SQLAction createSQLAction(SQLActionVisitor visitor)

Calls "makeUpdate" on the visitor.

Specified by:

createSQLAction in interface Query

Specified by:

createSQLAction in class AbstractQuery

Since:

1.2

addUpdAttribute

public void addUpdAttribute(java.lang.String attrName,
                            java.lang.Object updatedValue)

getUpdAttributes

public java.util.Map getUpdAttributes()

Returns a map of updated attributes