com.caucho.amber.expr
Class KeyColumnExpr

java.lang.Object
  com.caucho.amber.expr.AbstractAmberExpr
      com.caucho.amber.expr.ColumnExpr
          com.caucho.amber.expr.KeyColumnExpr

All Implemented Interfaces:

AmberExpr

public class KeyColumnExpr
extends ColumnExpr

Bound identifier expression.

Field Summary

Fields inherited from class com.caucho.amber.expr.ColumnExpr

_fromItem, _parent

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

IS_INNER_JOIN, USES_DATA

Constructor Summary

KeyColumnExpr(PathExpr parent, AmberColumn column)
Creates a new unbound id expression.

Method Summary

AmberExpr	replaceJoin(JoinExpr join) Replaces linked join to eliminate a table.
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.ColumnExpr

bindSelect, createBoolean, generateHaving, generateUpdateWhere, generateWhere, getColumn, getParent, getType, hasRelationship, toString

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

exists, exists, findItem, generateJoin, generateSelect, getCacheObject, getColumnCount, getObject, isBoolean, setInternalArgType, usesFrom

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyColumnExpr

public KeyColumnExpr(PathExpr parent,
                     AmberColumn column)

Creates a new unbound id expression.

Method Detail

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 ColumnExpr

replaceJoin

public AmberExpr replaceJoin(JoinExpr join)

Replaces linked join to eliminate a table.

Specified by:

replaceJoin in interface AmberExpr

Overrides:

replaceJoin in class ColumnExpr