edu.tsinghua.software.pages.columnFamily.DeleteColumnFamilyPage.java Source code

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Here is the source code for edu.tsinghua.software.pages.columnFamily.DeleteColumnFamilyPage.java

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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 edu.tsinghua.software.pages.columnFamily;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;

import org.apache.cassandra.thrift.InvalidRequestException;
import org.apache.cassandra.thrift.KsDef;
import org.apache.cassandra.thrift.NotFoundException;
import org.apache.cassandra.thrift.SchemaDisagreementException;
import org.apache.thrift.TException;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.ajax.markup.html.form.AjaxButton;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.CheckBoxMultipleChoice;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.model.Model;
import org.apache.wicket.request.mapper.parameter.PageParameters;

import edu.tsinghua.software.cassandra.tools.DataManager;
import edu.tsinghua.software.pages.cluster.ClusterView;
import edu.tsinghua.software.pages.keyspace.DeleteKeyspacePage;
import edu.tsinghua.software.pages.keyspace.KeyspacePage;
import edu.tsinghua.software.pages.template.BasePage;
import edu.tsinghua.software.pages.template.MenuItemEnum;

/**
 * DeleteKeyspace page
 * @author 
 * */
public class DeleteColumnFamilyPage extends BasePage {
    private static final long serialVersionUID = 1L;
    static PageParameters pageParameters = new PageParameters();
    transient DataManager client = new DataManager(getConnection());
    String clusterName = new String();
    String keyspaceName = new String();
    private ArrayList<String> columnFamilyNameList = new ArrayList<String>();
    // hold the checkbox values
    private ArrayList<String> columnFamilySelect = new ArrayList<String>();

    /**
     * DeleteKeyspacePage Construct
     * @param parameters 
     * */
    public DeleteColumnFamilyPage(final PageParameters parameters) throws TException {
        init(parameters);
        //navigation
        add(new BookmarkablePageLink<Void>("clusterNavigation", ClusterView.class)
                .add(new Label("clusterName", clusterName)));
        add(new BookmarkablePageLink<Void>("keyspaceNevigation", KeyspacePage.class, parameters)
                .add(new Label("keyspaceName", keyspaceName)));

        final FeedbackPanel feedBack = new FeedbackPanel("feedback");
        feedBack.setOutputMarkupId(true);

        final CheckBoxMultipleChoice<String> listColumnFamilies = new CheckBoxMultipleChoice<String>(
                "listColumnFamilies", new Model(columnFamilySelect), columnFamilyNameList);
        listColumnFamilies.setOutputMarkupId(true);

        AjaxLink checkAll = new AjaxLink<Void>("checkAll") {

            @Override
            public void onClick(AjaxRequestTarget target) {
                columnFamilySelect.addAll(listColumnFamilies.getChoices());
                target.add(listColumnFamilies);
            }
        };
        AjaxLink uncheckAll = new AjaxLink<Void>("uncheckAll") {

            @Override
            public void onClick(AjaxRequestTarget target) {
                columnFamilySelect.clear();
                target.add(listColumnFamilies);
            }
        };

        Form<?> form = new Form<Void>("userForm") {
            @Override
            public void onSubmit() {
                for (String columnFamilyName : columnFamilySelect) {
                    try {
                        client.dropColumnFamily(keyspaceName, columnFamilyName);
                        columnFamilyNameList.remove(columnFamilyName);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
                info("drop" + columnFamilySelect);
                listColumnFamilies.setChoices(columnFamilyNameList);
                try {
                    pageParameters.set("clusterParam", clusterName);
                    pageParameters.set("keyspaceParam", keyspaceName);
                    setResponsePage(new DeleteColumnFamilyPage(pageParameters));
                } catch (TException e) {
                    // TODO Auto-generated catch block
                    System.out.println("*************");
                    e.printStackTrace();
                }
            }
        };

        add(feedBack);
        add(form);
        form.add(listColumnFamilies);
        form.add(checkAll);
        form.add(uncheckAll);
    }

    /**
     * init for DeleteKeyspacePage class
     * @param pageParameters
     * */
    public void init(PageParameters pageParameters) throws TException {

        clusterName = pageParameters.get("clusterParam").toString();
        keyspaceName = pageParameters.get("keyspaceParam").toString();
        Set<String> set = client.getColumnFamilys(keyspaceName);
        for (String name : set) {
            columnFamilyNameList.add(name);
        }

    }

    @Override
    public MenuItemEnum getActiveMenu() {
        // TODO Auto-generated method stub
        return null;
    }
}