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 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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/*
 * 
 */

package com.sun.enterprise.admin.mbeans;

import com.sun.enterprise.admin.target.Target;
import com.sun.enterprise.admin.target.TargetBuilder;
import com.sun.enterprise.admin.target.TargetType;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.config.serverbeans.ClusterHelper;
import com.sun.enterprise.config.serverbeans.ConfigAPIHelper;
import com.sun.enterprise.config.serverbeans.ServerHelper;
import com.sun.enterprise.util.i18n.StringManager;
import java.util.List;

import javax.management.Attribute;

import com.sun.enterprise.config.serverbeans.ServerTags;
import javax.management.MBeanException;
import javax.management.MBeanServer;


/**
 * Static utility class for common functions in config mbeans. Place all common
 * utility type functions into this class for access across all config mbeans.
 *
 * @author  Rob Ruyak
 */
public class ConfigMBeanUtil {
    
    /**
     * i18n strings manager object
     */
    private static final StringManager localStrings = 
        StringManager.getManager(ConfigsMBean.class);
    
    
    //disallow the instantiation of this object
    private ConfigMBeanUtil() {
    }
    
    /**
     * Given a list and an Attribute object, returns whether or not the 
     * attribute with the specified name exists.
     *
     * @param list the list of Attribute objects
     * @param name the name of the attribute to find
     * @return true/false
     */
    public static boolean attributeDefinedInList(final List list, 
            final String name) {
        if(name != null) {            
            for(java.util.Iterator itr = list.iterator(); itr.hasNext(); ) {
                Attribute attr = (Attribute) itr.next();
                if(name != null && name.equals(attr.getName())) {
                    return true; 
                } 
            }
        }
        return false;
    }
    
    /**
     *
     *
     */
    public static MBeanServer getMBeanServer() throws MBeanException {
        return com.sun.enterprise.admin.common.MBeanServerFactory.getMBeanServer();
    }
    
    
    /**
     *
     *
     */
    public static Target getTarget(String targetName, TargetType[] targetTypes,
            ConfigContext configContext) throws MBeanException {        
                
        try {               
            Target target = TargetBuilder.INSTANCE.createTarget(
                    targetTypes, targetName, configContext);
            if (target.getType() == TargetType.SERVER || 
                target.getType() == TargetType.DAS) {
                //If we are operating on a server, ensure that the server is the only entity 
                //referencing its config
                String configName = ServerHelper.getConfigForServer(configContext,
                    target.getName()).getName();
                if (!ConfigAPIHelper.isConfigurationReferencedByServerOnly(configContext, 
                    configName, target.getName())) {
                        throw new ConfigException(localStrings.getString(
                            "configurationHasMultipleRefs", target.getName(), configName, 
                            ConfigAPIHelper.getConfigurationReferenceesAsString(
                                configContext, configName)));   
                }                                              
            } else if (target.getType() == TargetType.CLUSTER) {
                //If we are operating on a cluster, ensure that the cluster is the only entity 
                //referencing its config
                String configName = ClusterHelper.getConfigForCluster(configContext, 
                    target.getName()).getName();
                if (!ConfigAPIHelper.isConfigurationReferencedByClusterOnly(configContext, 
                    configName, target.getName())) {
                        throw new ConfigException(localStrings.getString(
                            "configurationHasMultipleRefs", target.getName(), configName, 
                            ConfigAPIHelper.getConfigurationReferenceesAsString(
                                configContext, configName))); 
                }     
            }
            return target;
        }
        catch (Exception e) {
            throw MBeanExceptionFormatter.toMBeanException(e, null);
        }        
    }
}