org.apache.openjpa.persistence.query
Class SubStringExpression

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.UnaryOperatorExpression
              extended by org.apache.openjpa.persistence.query.SubStringExpression
All Implemented Interfaces:
Serializable, Aggregate, Expression, OrderByItem, PredicateOperand, SelectItem, Visitable

public class SubStringExpression
extends UnaryOperatorExpression

Denotes SUBSTR(a,i1,i2) Expression.

Author:
Pinaki Poddar
See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.apache.openjpa.persistence.query.UnaryOperatorExpression
_e, _op
 
Fields inherited from class org.apache.openjpa.persistence.query.AbstractVisitable
CLOSE_BRACE, COMMA, EMPTY, OPEN_BRACE, SPACE
 
Constructor Summary
SubStringExpression(Expression op, Expression start)
           
SubStringExpression(Expression op, Expression start, Expression l)
           
SubStringExpression(Expression op, int start)
           
SubStringExpression(Expression op, int start, int len)
           
 
Method Summary
 String asExpression(AliasContext ctx)
          Get a JPQL fragment as used in WHERE clause.
 
Methods inherited from class org.apache.openjpa.persistence.query.UnaryOperatorExpression
asProjection, distinct, getOperand, getOperator
 
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.Expression
abs, concat, concat, dividedBy, dividedBy, in, in, in, in, in, in, isNull, length, locate, locate, locate, locate, locate, locate, lower, member, minus, minus, minus, mod, mod, plus, plus, sqrt, substring, substring, substring, substring, substring, substring, times, times, trim, trim, trim, trim, trim, trim, upper
 
Methods inherited from interface org.apache.openjpa.persistence.query.SelectItem
asc, desc
 
Methods inherited from interface org.apache.openjpa.persistence.query.PredicateOperand
between, between, between, between, between, between, between, between, between, between, between, between, between, equal, equal, equal, equal, equal, equal, equal, equal, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, lessEqual, lessEqual, lessEqual, lessEqual, lessEqual, lessThan, lessThan, lessThan, lessThan, lessThan, like, like, like, like, like, like, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual
 
Methods inherited from interface org.apache.openjpa.persistence.query.Visitable
asJoinable
 

Constructor Detail

SubStringExpression

public SubStringExpression(Expression op,
                           Expression start)

SubStringExpression

public SubStringExpression(Expression op,
                           int start)

SubStringExpression

public SubStringExpression(Expression op,
                           int start,
                           int len)

SubStringExpression

public SubStringExpression(Expression op,
                           Expression start,
                           Expression l)
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 UnaryOperatorExpression


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