com.caucho.amber.expr

Class ManyToOneExpr

java.lang.Object

com.caucho.amber.expr.AbstractAmberExpr

com.caucho.amber.expr.AbstractPathExpr

com.caucho.amber.expr.ManyToOneExpr

All Implemented Interfaces:

AmberExpr, PathExpr

public class ManyToOneExpr
extends AbstractPathExpr

Link expression to a new table

Field Summary

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

IS_INNER_JOIN, USES_DATA

Constructor Summary

Constructors

Constructor and Description
ManyToOneExpr(PathExpr parent, LinkColumns linkColumns) Creates a new unbound id expression.

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.
LoadExpr	createLoad() Creates a load expression.
boolean	equals(java.lang.Object o)
boolean	exists(FromItem from) Returns true if the item is forced to exist by the parent
void	generateMatchArgWhere(CharBuffer cb) Generates the where expression.
void	generateSelect(CharBuffer cb) Generates the select expression.
void	generateUpdateWhere(CharBuffer cb) Generates the (update) where expression.
void	generateWhere(CharBuffer cb) Generates the where expression.
FromItem	getChildFromItem() Return the child from item.
FromItem	getFromItem() Return the parent from item.
LinkColumns	getLinkColumns() Returns the link columns.
PathExpr	getParent() Returns the parent.
EntityType	getTargetType() Returns the entity class.
AmberType	getType() Returns the entity class.
int	hashCode()
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, createId

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

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

Methods inherited from class java.lang.Object

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

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

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

Constructor Detail

ManyToOneExpr

public ManyToOneExpr(PathExpr parent,
                     LinkColumns linkColumns)

Creates a new unbound id expression.

Method Detail

getTargetType

public EntityType getTargetType()

Returns the entity class.

getType

public AmberType getType()

Returns the entity class.

Specified by:

getType in interface AmberExpr

Overrides:

getType in class AbstractAmberExpr

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

getFromItem

public FromItem getFromItem()

Return the parent from item.

getLinkColumns

public LinkColumns getLinkColumns()

Returns the link columns.

getChildFromItem

public FromItem getChildFromItem()

Return 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

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

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

exists

public boolean exists(FromItem from)

Returns true if the item is forced to exist by the parent

Specified by:

exists in interface AmberExpr

Overrides:

exists in class AbstractAmberExpr

generateMatchArgWhere

public void generateMatchArgWhere(CharBuffer cb)

Generates the where expression.

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

generateSelect

public void generateSelect(CharBuffer cb)

Generates the select expression.

Specified by:

generateSelect in interface AmberExpr

Overrides:

generateSelect in class AbstractAmberExpr

createLoad

public LoadExpr createLoad()

Creates a load expression.

Specified by:

createLoad in interface PathExpr

Overrides:

createLoad in class AbstractPathExpr

getParent

public PathExpr getParent()

Returns the parent.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

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