dragon.ir.query
Class SimpleRelationPredicate

java.lang.Object
  |
  +--dragon.ir.query.AbstractIRQuery
        |
        +--dragon.ir.query.AbstractPredicate
              |
              +--dragon.ir.query.SimpleRelationPredicate

All Implemented Interfaces:

IRQuery, Predicate

public class SimpleRelationPredicate

extends AbstractPredicate

Simple relation predicate

Copyright: Copyright (c) 2005

Company: IST, Drexel University

Version:

1.0

Author:

Davis Zhou

Field Summary

Fields inherited from class dragon.ir.query.AbstractPredicate

constraint, expressionType, predicateType, weight

Fields inherited from class dragon.ir.query.AbstractIRQuery

children, optr

Fields inherited from interface dragon.ir.query.Predicate

PREDICATE_BOOL, PREDICATE_QUALIFIER, PREDICATE_RELATION, PREDICATE_SIMPLE, PREDICATE_TERM

Constructor Summary

SimpleRelationPredicate(java.lang.String[] predicate)

Method Summary

SimpleTermPredicate	getFirstTermPredicate()
SimpleTermPredicate	getSecondTermPredicate()
protected void	parse(java.lang.String[] predicate)
java.lang.String	toSQLExpression()
java.lang.String	toString()

Methods inherited from class dragon.ir.query.AbstractPredicate

getChild, getChildNum, getConstraint, getOperator, getSelectivity, getWeight, isBoolPredicate, isCompoundQuery, isPredicate, isQualifierPredicate, isRelationPredicate, isSimplePredicate, isTermPredicate, parse, setWeight

Methods inherited from class dragon.ir.query.AbstractIRQuery

getQueryKey, getTokenList, isRelBoolQuery, isRelSimpleQuery, setQueryKey

Methods inherited from class java.lang.Object

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

Methods inherited from interface dragon.ir.query.IRQuery

getQueryKey, isRelBoolQuery, isRelSimpleQuery, setQueryKey

Constructor Detail

SimpleRelationPredicate

public SimpleRelationPredicate(java.lang.String[] predicate)

Method Detail

parse

protected void parse(java.lang.String[] predicate)

Specified by:

parse in class AbstractPredicate

toSQLExpression

public java.lang.String toSQLExpression()

toString

public java.lang.String toString()

Specified by:

toString in interface Predicate

Overrides:

toString in class AbstractIRQuery

getFirstTermPredicate

public SimpleTermPredicate getFirstTermPredicate()

getSecondTermPredicate

public SimpleTermPredicate getSecondTermPredicate()