stringconstraintcomparator.java

drools 一个开放源码的规则引擎

package org.drools.rule;

import org.drools.spi.ConstraintComparator;

public class StringConstraintComparator
    implements
    ConstraintComparator
{
    public final int type;

    public StringConstraintComparator(int type)
    {
        this.type = type;
    }

    public boolean compare(Object object1,
                           Object object2)
    {
        boolean value = false;
        switch ( this.type )
        {
        case ConstraintComparator.EQUAL :
            value = isEqual( object1, object2 );
            break;
        case ConstraintComparator.NOT_EQUAL :
            value = isNotEqual( object1, object2 );
            break;             
        }
        return value;
    }

    private boolean isEqual(Object object1,
                           Object object2)
    {
        return object1.equals( object2 );
    }

    private boolean isNotEqual(Object object1,
                              Object object2)
    {
        return !object1.equals( object2 );
    }

}