com.mebigfatguy.mongobrowser.actions.ManageIndicesAction.java Source code

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Here is the source code for com.mebigfatguy.mongobrowser.actions.ManageIndicesAction.java

Source

/*
 * mongobrowser - a webstart gui application for viewing, 
 *                editing and administering a Mongo Database
 * Copyright 2009-2011 MeBigFatGuy.com
 * Copyright 2009-2011 Dave Brosius
 * 
 * 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 com.mebigfatguy.mongobrowser.actions;

import java.awt.event.ActionEvent;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.swing.AbstractAction;
import javax.swing.JTree;

import com.mebigfatguy.mongobrowser.MongoBundle;
import com.mebigfatguy.mongobrowser.MongoConstants;
import com.mebigfatguy.mongobrowser.MongoContext;
import com.mebigfatguy.mongobrowser.dialogs.ManageIndicesDialog;
import com.mebigfatguy.mongobrowser.dialogs.MongoTreeNode;
import com.mebigfatguy.mongobrowser.model.IndexDescription;
import com.mebigfatguy.mongobrowser.model.IndexField;
import com.mebigfatguy.mongobrowser.model.IndexFieldList;
import com.mongodb.BasicDBObject;
import com.mongodb.DBCollection;
import com.mongodb.DBObject;

public class ManageIndicesAction extends AbstractAction {

    private static final long serialVersionUID = 554299884297317739L;
    private final MongoContext context;

    public ManageIndicesAction(MongoContext ctxt) {
        super(MongoBundle.getString(MongoBundle.Key.ManageIndices));
        context = ctxt;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        JTree tree = context.getTree();

        MongoTreeNode[] nodes = context.getSelectedNodes();
        DBCollection collection = (DBCollection) nodes[0].getUserObject();
        List<IndexDescription> indices = buildIndexDescriptions(collection);

        ManageIndicesDialog dialog = new ManageIndicesDialog(indices);
        dialog.setLocationRelativeTo(tree);
        dialog.setModal(true);
        dialog.setVisible(true);

        if (dialog.isOK()) {
            indices = dialog.getIndicesNames();
            updateIndices(collection, indices);
        }
    }

    private List<IndexDescription> buildIndexDescriptions(DBCollection collection) {
        List<IndexDescription> indices = new ArrayList<IndexDescription>();
        List<DBObject> dbIndices = collection.getIndexInfo();
        for (DBObject dbIndex : dbIndices) {
            String name = (String) dbIndex.get(MongoConstants.NAME);
            Map<String, Integer> srcFields = (Map<String, Integer>) dbIndex.get(MongoConstants.KEY);
            IndexFieldList fieldSet = new IndexFieldList();

            for (Map.Entry<String, Integer> entry : srcFields.entrySet()) {
                fieldSet.add(entry.getKey(), MongoConstants.ASCENDING.equals(entry.getValue()));
            }

            indices.add(new IndexDescription(name, fieldSet));
        }

        return indices;
    }

    private void updateIndices(DBCollection collection, List<IndexDescription> indices) {

        collection.dropIndexes();

        for (IndexDescription index : indices) {
            if (!MongoConstants.ID_INDEX.equals(index.getIndexName())) {

                BasicDBObject dbFields = new BasicDBObject();
                IndexFieldList fieldList = index.getIndexFieldList();

                for (IndexField field : fieldList) {
                    dbFields.append(field.getFieldName(), Integer.valueOf(field.isAscending() ? 1 : -1));
                }

                collection.ensureIndex(dbFields, index.getIndexName());
            }
        }
    }
}