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

Constructors

Constructor and Description
SimpleRelationPredicate(String[] predicate)

Method Summary

Modifier and Type	Method and Description
SimpleTermPredicate	getFirstTermPredicate()
SimpleTermPredicate	getSecondTermPredicate()
protected void	parse(String[] predicate)
String	toSQLExpression()
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(String[] predicate)

Method Detail

parse

protected void parse(String[] predicate)

Specified by:

parse in class AbstractPredicate

toSQLExpression

public String toSQLExpression()

toString

public String toString()

Specified by:

toString in interface IRQuery

Specified by:

toString in interface Predicate

Overrides:

toString in class AbstractIRQuery

getFirstTermPredicate

public SimpleTermPredicate getFirstTermPredicate()

getSecondTermPredicate

public SimpleTermPredicate getSecondTermPredicate()