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/*
 * 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.tomcat.util.modeler;

import java.util.Locale;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;

import javax.management.MBeanOperationInfo;
import javax.management.MBeanParameterInfo;

/**
 * 

Internal configuration information for an Operation * descriptor.

* * @author Craig R. McClanahan */ public class OperationInfo extends FeatureInfo { private static final long serialVersionUID = 4418342922072614875L; // ----------------------------------------------------------- Constructors /** * Standard zero-arguments constructor. */ public OperationInfo() { super(); } // ----------------------------------------------------- Instance Variables protected String impact = "UNKNOWN"; protected String role = "operation"; protected final ReadWriteLock parametersLock = new ReentrantReadWriteLock(); protected ParameterInfo parameters[] = new ParameterInfo[0]; // ------------------------------------------------------------- Properties /** * @return the "impact" of this operation, which should be * a (case-insensitive) string value "ACTION", "ACTION_INFO", * "INFO", or "UNKNOWN". */ public String getImpact() { return this.impact; } public void setImpact(String impact) { if (impact == null) { this.impact = null; } else { this.impact = impact.toUpperCase(Locale.ENGLISH); } } /** * @return the role of this operation ("getter", "setter", "operation", or * "constructor"). */ public String getRole() { return this.role; } public void setRole(String role) { this.role = role; } /** * @return the fully qualified Java class name of the return type for this * operation. */ public String getReturnType() { if(type == null) { type = "void"; } return type; } public void setReturnType(String returnType) { this.type = returnType; } /** * @return the set of parameters for this operation. */ public ParameterInfo[] getSignature() { Lock readLock = parametersLock.readLock(); readLock.lock(); try { return this.parameters; } finally { readLock.unlock(); } } // --------------------------------------------------------- Public Methods /** * Add a new parameter to the set of arguments for this operation. * * @param parameter The new parameter descriptor */ public void addParameter(ParameterInfo parameter) { Lock writeLock = parametersLock.writeLock(); writeLock.lock(); try { ParameterInfo results[] = new ParameterInfo[parameters.length + 1]; System.arraycopy(parameters, 0, results, 0, parameters.length); results[parameters.length] = parameter; parameters = results; this.info = null; } finally { writeLock.unlock(); } } /** * Create and return a ModelMBeanOperationInfo object that * corresponds to the attribute described by this instance. * @return the operation info */ MBeanOperationInfo createOperationInfo() { // Return our cached information (if any) if (info == null) { // Create and return a new information object int impact = MBeanOperationInfo.UNKNOWN; if ("ACTION".equals(getImpact())) { impact = MBeanOperationInfo.ACTION; } else if ("ACTION_INFO".equals(getImpact())) { impact = MBeanOperationInfo.ACTION_INFO; } else if ("INFO".equals(getImpact())) { impact = MBeanOperationInfo.INFO; } info = new MBeanOperationInfo(getName(), getDescription(), getMBeanParameterInfo(), getReturnType(), impact); } return (MBeanOperationInfo)info; } protected MBeanParameterInfo[] getMBeanParameterInfo() { ParameterInfo params[] = getSignature(); MBeanParameterInfo parameters[] = new MBeanParameterInfo[params.length]; for (int i = 0; i < params.length; i++) { parameters[i] = params[i].createParameterInfo(); } return parameters; } }




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