- /*
- * Copyright 2001-2004 The Apache Software Foundation
- *
- * 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 org.apache.commons.collections.functors;
-
- import java.io.Serializable;
-
- import org.apache.commons.collections.Closure;
-
- /**
- * Closure implementation that calls another closure n times, like a for loop.
- *
- * @since Commons Collections 3.0
- * @version $Revision: 1.5 $ $Date: 2004/05/16 11:47:38 $
- *
- * @author Stephen Colebourne
- */
- public class ForClosure implements Closure, Serializable {
-
- /** Serial version UID */
- static final long serialVersionUID = -1190120533393621674L;
-
- /** The number of times to loop */
- private final int iCount;
- /** The closure to call */
- private final Closure iClosure;
-
- /**
- * Factory method that performs validation.
- * <p>
- * A null closure or zero count returns the <code>NOPClosure</code>.
- * A count of one returns the specified closure.
- *
- * @param count the number of times to execute the closure
- * @param closure the closure to execute, not null
- * @return the <code>for</code> closure
- */
- public static Closure getInstance(int count, Closure closure) {
- if (count <= 0 || closure == null) {
- return NOPClosure.INSTANCE;
- }
- if (count == 1) {
- return closure;
- }
- return new ForClosure(count, closure);
- }
-
- /**
- * Constructor that performs no validation.
- * Use <code>getInstance</code> if you want that.
- *
- * @param count the number of times to execute the closure
- * @param closure the closure to execute, not null
- */
- public ForClosure(int count, Closure closure) {
- super();
- iCount = count;
- iClosure = closure;
- }
-
- /**
- * Executes the closure <code>count</code> times.
- *
- * @param input the input object
- */
- public void execute(Object input) {
- for (int i = 0; i < iCount; i++) {
- iClosure.execute(input);
- }
- }
-
- /**
- * Gets the closure.
- *
- * @return the closure
- * @since Commons Collections 3.1
- */
- public Closure getClosure() {
- return iClosure;
- }
-
- /**
- * Gets the count.
- *
- * @return the count
- * @since Commons Collections 3.1
- */
- public int getCount() {
- return iCount;
- }
-
- }