Java tutorial
/* 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 com.ocs.dynamo.filter; import org.apache.commons.lang.ObjectUtils; /** * A filter that matches if the property to check for falls within the defined range. This range is * inclusive (i.e. boundary values count) * * @author bas.rutten */ public class Between extends AbstractFilter implements PropertyFilter { private final String propertyId; private final Comparable<?> startValue; private final Comparable<?> endValue; /** * Constructor * * @param propertyId * @param startValue * @param endValue */ public Between(String propertyId, Comparable<?> startValue, Comparable<?> endValue) { this.propertyId = propertyId; this.startValue = startValue; this.endValue = endValue; } @Override public String getPropertyId() { return propertyId; } public Comparable<?> getStartValue() { return startValue; } public Comparable<?> getEndValue() { return endValue; } @SuppressWarnings("unchecked") @Override public boolean evaluate(Object that) { Object value = getProperty(that, getPropertyId()); if (value instanceof Comparable) { Comparable<Object> comp = (Comparable<Object>) value; return comp.compareTo(getStartValue()) >= 0 && comp.compareTo(getEndValue()) <= 0; } return false; } @Override public int hashCode() { return getPropertyId().hashCode() + getStartValue().hashCode() + getEndValue().hashCode(); } @Override public boolean equals(Object obj) { // Only objects of the same class can be equal if (obj == null || !getClass().equals(obj.getClass())) { return false; } final Between o = (Between) obj; return ObjectUtils.equals(propertyId, o.getPropertyId()) && ObjectUtils.equals(startValue, o.getStartValue()) && ObjectUtils.equals(endValue, o.getEndValue()); } @Override public String toString() { return getPropertyId() + " " + super.toString() + " " + getStartValue() + " and " + getEndValue(); } }