com.caucho.amber.expr
Class BinaryExpr

java.lang.Object
  com.caucho.amber.expr.AbstractAmberExpr
      com.caucho.amber.expr.BinaryExpr

All Implemented Interfaces:

AmberExpr

public class BinaryExpr
extends AbstractAmberExpr

Bound identifier expression.

Field Summary

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

IS_INNER_JOIN, USES_DATA

Constructor Summary

BinaryExpr(int token, AmberExpr left, AmberExpr right)
Creates a new cmp expression

Method Summary

AmberExpr	bindSelect(QueryParser parser) Binds the expression as a select item.
boolean	exists(FromItem from) Returns true if the expression uses the from item.
void	generateHaving(CharBuffer cb) Generates the having expression.
void	generateUpdateWhere(CharBuffer cb) Generates the (update) where expression.
void	generateWhere(CharBuffer cb) Generates the where expression.
java.lang.Class	getJavaType() Returns the java type.
boolean	hasRelationship() Returns true if this expr has any relationship.
boolean	isBoolean() Returns true for a boolean expr.
AmberExpr	replaceJoin(JoinExpr join) Returns true if the expression uses the from item.
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.AbstractAmberExpr

createBoolean, exists, findItem, generateJoin, generateSelect, getCacheObject, getColumnCount, getObject, getType, setInternalArgType, usesFrom

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryExpr

public BinaryExpr(int token,
                  AmberExpr left,
                  AmberExpr right)

Creates a new cmp expression

Method Detail

hasRelationship

public boolean hasRelationship()

Returns true if this expr has any relationship.

Specified by:

hasRelationship in interface AmberExpr

Overrides:

hasRelationship in class AbstractAmberExpr

isBoolean

public boolean isBoolean()

Returns true for a boolean expr.

Specified by:

isBoolean in interface AmberExpr

Overrides:

isBoolean in class AbstractAmberExpr

getJavaType

public java.lang.Class getJavaType()

Returns the java type.

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

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 expression uses the from item.

Specified by:

exists in interface AmberExpr

Overrides:

exists in class AbstractAmberExpr

replaceJoin

public AmberExpr replaceJoin(JoinExpr join)

Returns true if the expression uses the from item.

Specified by:

replaceJoin in interface AmberExpr

Overrides:

replaceJoin in class AbstractAmberExpr

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

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object