org.castor.cpa.query.object.expression
Class CompoundExpression

java.lang.Object
  org.castor.cpa.query.object.AbstractQueryObject
      org.castor.cpa.query.object.expression.AbstractExpression
          org.castor.cpa.query.object.expression.CompoundExpression

All Implemented Interfaces:

Expression, QueryObject

Direct Known Subclasses:

Add, Concat, Divide, Multiply, Remainder, Subtract

public abstract class CompoundExpression
extends AbstractExpression

Abstract base class for compound expression.

Since:

1.3

Version:

$Revision: 7121 $ $Date: 2006-04-25 16:09:10 -0600 (Tue, 25 Apr 2006) $

Author:

Udai Gupta, Ralf Joachim

Constructor Summary

CompoundExpression()

Method Summary

void	addExpression(Expression expression) Add expression to the end of the list.
List<Expression>	getExpressions() Get list of expressions.
protected abstract String	getOperator() Get operator of the compound expression.
StringBuilder	toString(StringBuilder sb) Append a string representation of the object to the given StringBuilder.

Methods inherited from class org.castor.cpa.query.object.expression.AbstractExpression

abs, add, add, add, add, between, between, between, between, between, between, between, concat, concat, divide, divide, divide, divide, equal, equal, equal, equal, equal, equal, equal, equal, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterEqual, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, length, lessEqual, lessEqual, lessEqual, lessEqual, lessEqual, lessEqual, lessEqual, lessThan, lessThan, lessThan, lessThan, lessThan, lessThan, lessThan, like, like, like, like, like, like, locate, locate, locate, locate, locate, locate, lower, multiply, multiply, multiply, multiply, negate, notBetween, notBetween, notBetween, notBetween, notBetween, notBetween, notBetween, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notEqual, notLike, notLike, notLike, notLike, notLike, notLike, plus, remainder, remainder, remainder, remainder, sqrt, substring, substring, substring, substring, subtract, subtract, subtract, subtract, trim, trim, trim, trim, trim, trim, upper

Methods inherited from class org.castor.cpa.query.object.AbstractQueryObject

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CompoundExpression

public CompoundExpression()

Method Detail

getOperator

protected abstract String getOperator()

Get operator of the compound expression.

Returns:

Operator of the compound expression.

addExpression

public final void addExpression(Expression expression)

Add expression to the end of the list.

Parameters:

expression - Expression to add to end of list.

getExpressions

public final List<Expression> getExpressions()

Get list of expressions.

Returns:

List of expressions.

toString

public final StringBuilder toString(StringBuilder sb)

Append a string representation of the object to the given StringBuilder. In general, the toString method for query objects appends a string that textually represents this object. The result should be a query string that complies to EJB QL specification as long as the query object represents a syntay element of it. It is required that all subclasses override this method. The toString method defined at class Object is overwritten and calls this method.

Parameters:

sb - StringBuilder to append the string representation of this object to.

Returns:

Same instance of StringBuilder given as parameter.