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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/ResourceCount.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/ResourceCount.java | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/ResourceCount.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/ResourceCount.java new file mode 100644 index 00000000..b29b57b6 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/taskdefs/ResourceCount.java @@ -0,0 +1,124 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.tools.ant.taskdefs; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.Task; +import org.apache.tools.ant.taskdefs.condition.Condition; +import org.apache.tools.ant.types.Comparison; +import org.apache.tools.ant.types.Reference; +import org.apache.tools.ant.types.ResourceCollection; + +/** + * Count resources from a ResourceCollection, storing to a property or + * writing to the log. Can also be used as a Condition. + * @since Ant 1.7 + */ +public class ResourceCount extends Task implements Condition { + + private static final String ONE_NESTED_MESSAGE + = "ResourceCount can count resources from exactly one nested ResourceCollection."; + + private static final String COUNT_REQUIRED + = "Use of the ResourceCount condition requires that the count attribute be set."; + + private ResourceCollection rc; + private Comparison when = Comparison.EQUAL; + private Integer count; + private String property; + + /** + * Add the ResourceCollection to count. + * @param r the ResourceCollection to count. + * @throws BuildException if already set. + */ + public void add(ResourceCollection r) { + if (rc != null) { + throw new BuildException(ONE_NESTED_MESSAGE); + } + rc = r; + } + + /** + * Set the ResourceCollection reference. + * @param r the Reference. + */ + public void setRefid(Reference r) { + Object o = r.getReferencedObject(); + if (!(o instanceof ResourceCollection)) { + throw new BuildException(r.getRefId() + + " doesn\'t denote a ResourceCollection"); + } + add((ResourceCollection) o); + } + + /** + * Execute as a Task. + */ + public void execute() { + if (rc == null) { + throw new BuildException(ONE_NESTED_MESSAGE); + } + if (property == null) { + log("resource count = " + rc.size()); + } else { + getProject().setNewProperty(property, Integer.toString(rc.size())); + } + } + + /** + * Fulfill the condition contract. + * @return true if the specified ResourceCollection satisfies the set criteria. + * @throws BuildException if an error occurs. + */ + public boolean eval() { + if (rc == null) { + throw new BuildException(ONE_NESTED_MESSAGE); + } + if (count == null) { + throw new BuildException(COUNT_REQUIRED); + } + return when.evaluate(new Integer(rc.size()).compareTo(count)); + } + + /** + * Set the target count number for use as a Condition. + * @param c number of Resources as int. + */ + public void setCount(int c) { + count = new Integer(c); + } + + /** + * Set the comparison for use as a Condition. + * @param c Comparison (an EnumeratedAttribute) When. + * @see org.apache.tools.ant.types.Comparison + */ + public void setWhen(Comparison c) { + when = c; + } + + /** + * Set the name of the property to set in task mode. + * @param p the property name to set. + */ + public void setProperty(String p) { + property = p; + } + +} |