cswcatalog.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.datasources.ogc.csw;

import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import java.io.IOException;
import java.io.InputStream;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;


/**
 * Maintains information of CSW Catalog
 *
 * @remark The catalogs contain all the information like url, profile information
 * credentials and capabilities.
 * @version 1.0
 * @created 25-Jul-2007 1:28:44 PM
 */
public class CswCatalog implements Comparable<CswCatalog> {
    //private static int IDCounter = 1;
    private String baseUrl;
    private CswCatalogCapabilities capabilities = null;
    private UsernamePasswordCredentials credentials;
    private String id;
    private boolean isConnected = false;

    //private boolean locking = false;
    private String name;
    private CswProfile profile;
    private String url;

    public CswCatalog() {
    }

    /**
     *
     * @param surl
     * @param sname
     * @param oprofile
     */
    public CswCatalog(String url, String name, CswProfile profile) {
        this.url = url;
        this.id = this.url;
        this.name = name;
        this.profile = profile;
    }

    public String getBaseUrl() {
        return baseUrl;
    }

    public void setBaseUrl(String baseUrl) {
        this.baseUrl = baseUrl;
    }

    /**
     * Execute GetCapabilities using SAX objects.
     * Send GetCapabilities request, receive the response from a service, and
     * parse the response to get URLs for "GetRecords" and "GetRecordsById".
     * @return
     * @throws SAXException
     * @throws IOException
     * @throws ParserConfigurationException
     */
    private CswCatalogCapabilities executeCapabilitiesWithSAX()
        throws SAXException, IOException, ParserConfigurationException {
        CswCatalogCapabilities capabilities = new CswCatalogCapabilities();

        CswClient client = new CswClient();

        // Execute submission and parsing into response element
        InputStream responseStream = client.submitHttpRequest("GET", url, "");

        SAXParserFactory factory = SAXParserFactory.newInstance();
        factory.setNamespaceAware(true);

        CapabilitiesParse cParse = new CapabilitiesParse(capabilities);
        factory.newSAXParser().parse(new InputSource(responseStream), cParse);

        this.capabilities = capabilities;

        return capabilities;
    }

    public CswCatalogCapabilities getCapabilities() {
        return this.capabilities;
    }

    public void setCapabilities(CswCatalogCapabilities capabilities) {
        this.capabilities = capabilities;
    }

    public UsernamePasswordCredentials getCredentials() {
        return credentials;
    }

    public void setCredentials(UsernamePasswordCredentials credentials) {
        this.credentials = credentials;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        // if there is no input for name, use url as a name
        if ((name == null) || (name.length() == 0)) {
            name = url;
        }

        this.name = name;
    }

    public CswProfile getProfile() {
        return profile;
    }

    public void setProfile(CswProfile profile) {
        this.profile = profile;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    /**
     * To connect to a catalog service. The capabilties details are populated based on
     * the service.
     * @throws ParserConfigurationException
     * @throws IOException
     * @throws SAXException
     *
     * @remark
     * @returns true if connection can be made to the csw service
     */
    public boolean connect()
        throws SAXException, IOException, ParserConfigurationException {
        //Execute getCapabilites and setup URLs for "GetRecords" and "GetRecordById"
        CswCatalogCapabilities capabilities = executeCapabilitiesWithSAX();

        this.isConnected = capabilities.isReady();

        return this.isConnected;
    }

    /**
     * To test if already connected to a catalog service.
     *
     * @remark
     * @returns true if connection has already been made to the csw service else false
     */
    public boolean IsConnected() {
        return this.isConnected;
    }

    public boolean Locking() {
        return false;
    }

    public int compareTo(CswCatalog arg0) {
        // TODO Auto-generated method stub
        return 0;
    }
}