com.caucho.amber.expr

Class ElementCollectionExpr

java.lang.Object

com.caucho.amber.expr.AbstractAmberExpr

com.caucho.amber.expr.AbstractPathExpr

com.caucho.amber.expr.ElementCollectionExpr

All Implemented Interfaces:

AmberExpr, PathExpr

public class ElementCollectionExpr
extends AbstractPathExpr

Expression to a collection of rows The relation is maintained by a link from the child objects to the parent object.

Field Summary

Fields inherited from interface com.caucho.amber.expr.AmberExpr

IS_INNER_JOIN, USES_DATA

Constructor Summary

Constructors

Constructor and Description
ElementCollectionExpr(QueryParser parser, PathExpr parent, LinkColumns linkColumns, ElementType targetType) Creates a new expression to the child objects.

Method Summary

Modifier and Type	Method and Description
AmberExpr	bindSelect(QueryParser parser) Binds the expression as a select item.
PathExpr	bindSelect(QueryParser parser, java.lang.String id) Binds the expression as a select item.
FromItem	bindSubPath(QueryParser parser) Binds the expression as a subpath.
IdExpr	createId(FromItem fromItem) Creates an id expression.
boolean	equals(java.lang.Object o)
void	generateHaving(CharBuffer cb) Generates the having expression.
void	generateSelect(CharBuffer cb) Generates the where expression.
void	generateUpdateWhere(CharBuffer cb) Generates the (update) where expression.
void	generateWhere(CharBuffer cb) Generates the where expression.
FromItem	getChildFromItem() Returns the child from item.
LinkColumns	getLinkColumns() Returns the link columns.
PathExpr	getParent() Returns the parent.
AmberTable	getTable() Returns the table.
AmberBeanType	getTargetType() Returns the expr type.
AmberType	getType() Returns the expr type.
java.lang.String	toString()
boolean	usesFrom(FromItem from, int type, boolean isNot) Returns true if the expression uses the from item.

Methods inherited from class com.caucho.amber.expr.AbstractPathExpr

createArray, createField, createLoad

Methods inherited from class com.caucho.amber.expr.AbstractAmberExpr

createBoolean, exists, exists, findItem, generateJoin, getCacheObject, getColumnCount, getObject, hasRelationship, isBoolean, replaceJoin, setInternalArgType, usesFrom

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.caucho.amber.expr.AmberExpr

createBoolean, exists, exists, findItem, generateJoin, getCacheObject, getObject, hasRelationship, isBoolean, replaceJoin, setInternalArgType, usesFrom

Constructor Detail

ElementCollectionExpr

public ElementCollectionExpr(QueryParser parser,
                             PathExpr parent,
                             LinkColumns linkColumns,
                             ElementType targetType)

Creates a new expression to the child objects.

Method Detail

getLinkColumns

public LinkColumns getLinkColumns()

Returns the link columns.

getType

public AmberType getType()

Returns the expr type.

Specified by:

getType in interface AmberExpr

Overrides:

getType in class AbstractAmberExpr

createId

public IdExpr createId(FromItem fromItem)

Creates an id expression.

Specified by:

createId in interface PathExpr

Overrides:

createId in class AbstractPathExpr

getTargetType

public AmberBeanType getTargetType()

Returns the expr type.

usesFrom

public boolean usesFrom(FromItem from,
                        int type,
                        boolean isNot)

Returns true if the expression uses the from item.

Specified by:

usesFrom in interface AmberExpr

Overrides:

usesFrom in class AbstractAmberExpr

getParent

public PathExpr getParent()

Returns the parent.

bindSelect

public AmberExpr bindSelect(QueryParser parser)

Binds the expression as a select item.

Specified by:

bindSelect in interface AmberExpr

Specified by:

bindSelect in class AbstractAmberExpr

bindSelect

public PathExpr bindSelect(QueryParser parser,
                           java.lang.String id)

Binds the expression as a select item.

Specified by:

bindSelect in interface PathExpr

Overrides:

bindSelect in class AbstractPathExpr

getChildFromItem

public FromItem getChildFromItem()

Returns the child from item.

Specified by:

getChildFromItem in interface PathExpr

Overrides:

getChildFromItem in class AbstractPathExpr

bindSubPath

public FromItem bindSubPath(QueryParser parser)

Binds the expression as a subpath.

Specified by:

bindSubPath in interface PathExpr

Overrides:

bindSubPath in class AbstractPathExpr

getTable

public AmberTable getTable()

Returns the table.

generateWhere

public void generateWhere(CharBuffer cb)

Generates the where expression.

Specified by:

generateWhere in interface AmberExpr

Overrides:

generateWhere in class AbstractAmberExpr

generateUpdateWhere

public void generateUpdateWhere(CharBuffer cb)

Generates the (update) where expression.

Specified by:

generateUpdateWhere in interface AmberExpr

Overrides:

generateUpdateWhere in class AbstractAmberExpr

generateHaving

public void generateHaving(CharBuffer cb)

Generates the having expression.

Specified by:

generateHaving in interface AmberExpr

Overrides:

generateHaving in class AbstractAmberExpr

generateSelect

public void generateSelect(CharBuffer cb)

Generates the where expression.

Specified by:

generateSelect in interface AmberExpr

Overrides:

generateSelect in class AbstractAmberExpr

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object