org.apache.openjpa.persistence.query
Class ConstantExpression

java.lang.Object
  extended by org.apache.openjpa.persistence.query.AbstractVisitable
      extended by org.apache.openjpa.persistence.query.ExpressionImpl
          extended by org.apache.openjpa.persistence.query.ConstantExpression
All Implemented Interfaces:
Serializable, Expression, OrderByItem, PredicateOperand, SelectItem, Visitable
Direct Known Subclasses:
LiteralExpression

 class ConstantExpression
extends ExpressionImpl

Denotes a Value based expression such as Number, String or Date.

Author:
Pinaki Poddar

Field Summary
 
Fields inherited from class org.apache.openjpa.persistence.query.AbstractVisitable
CLOSE_BRACE, COMMA, EMPTY, OPEN_BRACE, SPACE
 
Constructor Summary
ConstantExpression(Object value)
           
 
Method Summary
 String asExpression(AliasContext ctx)
          Get a JPQL fragment as used in WHERE clause.
 String asProjection(AliasContext ctx)
          Gets the string representation in SELECT projection.
 
Methods inherited from class org.apache.openjpa.persistence.query.ExpressionImpl
abs, asc, between, between, between, between, between, between, between, between, between, between, between, between, between, concat, concat, desc, dividedBy, dividedBy, equal, equal, equal, equal, equal, equal, equal, equal, getAliasHint, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, in, in, in, in, in, in, isNull, length, lessEqual, lessEqual, lessEqual, lessEqual, lessEqual, lessThan, lessThan, lessThan, lessThan, lessThan, like, like, like, like, like, like, locate, locate, locate, locate, locate, locate, lower, member, minus, minus, minus, mod, mod, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, plus, plus, sqrt, substring, substring, substring, substring, substring, substring, times, times, trim, trim, trim, trim, trim, trim, upper
 
Methods inherited from class org.apache.openjpa.persistence.query.AbstractVisitable
asJoinable
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.apache.openjpa.persistence.query.Visitable
asJoinable
 

Constructor Detail

ConstantExpression

public ConstantExpression(Object value)
Method Detail

asExpression

public String asExpression(AliasContext ctx)
Description copied from interface: Visitable
Get a JPQL fragment as used in WHERE clause.

Specified by:
asExpression in interface Visitable
Overrides:
asExpression in class AbstractVisitable

asProjection

public String asProjection(AliasContext ctx)
Description copied from interface: Visitable
Gets the string representation in SELECT projection.

Specified by:
asProjection in interface Visitable
Overrides:
asProjection in class AbstractVisitable


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