1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 package org.apache.tools.ant.taskdefs.condition; 20 21 import org.apache.tools.ant.BuildException; 22 23 /** 24 * Interface for conditions to use inside the <condition> task. 25 * 26 */ 27 public interface Condition { 28 /** 29 * Is this condition true? 30 * @return true if the condition is true 31 * @exception BuildException if an error occurs 32 */ eval()33 boolean eval() throws BuildException; 34 } 35 36