com.caucho.amber.expr
Class BinaryExpr

java.lang.Object
  extended by com.caucho.amber.expr.AbstractAmberExpr
      extended by 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