OperatorPredicate.java

/**
*    Copyright 2011, Big Switch Networks, Inc. 
*    Originally created by David Erickson, Stanford University
* 
*    Licensed under the Apache License, Version 2.0 (the "License"); you may
*    not use this file except in compliance with the License. You may obtain
*    a copy of the License at
*
*         http://www.apache.org/licenses/LICENSE-2.0
*
*    Unless required by applicable law or agreed to in writing, software
*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
*    License for the specific language governing permissions and limitations
*    under the License.
**/

package net.floodlightcontroller.storage;

/** Predicate class to specify rows by equality or comparison operations
 * of column values. The Storage API uses the special column name of "id"
 * to specify the primary key values for the row.
 * 
 * @author rob
 */
public class OperatorPredicate implements IPredicate {
    
    public enum Operator { EQ, LT, LTE, GT, GTE };
    
    private String columnName;
    private Operator operator;
    private Comparable<?> value;
    
    public OperatorPredicate(String columnName, Operator operator, Comparable<?> value) {
        this.columnName = columnName;
        this.operator = operator;
        this.value = value;
    }
    
    public String getColumnName() {
        return columnName;
    }
    
    public Operator getOperator() {
        return operator;
    }
    
    public Comparable<?> getValue() {
        return value;
    }
}