pt.webdetails.cdf.dd.datasources.CdaDataSourceReader.java Source code

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Here is the source code for pt.webdetails.cdf.dd.datasources.CdaDataSourceReader.java

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/*!
 * Copyright 2002 - 2015 Webdetails, a Pentaho company. All rights reserved.
 *
 * This software was developed by Webdetails and is provided under the terms
 * of the Mozilla Public License, Version 2.0, or any later version. You may not use
 * this file except in compliance with the license. If you need a copy of the license,
 * please go to http://mozilla.org/MPL/2.0/. The Initial Developer is Webdetails.
 *
 * Software distributed under the Mozilla Public License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. Please refer to
 * the license for the specific language governing your rights and limitations.
 */

package pt.webdetails.cdf.dd.datasources;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.Pointer;
import org.apache.commons.jxpath.ri.model.beans.NullPointer;
import org.apache.commons.lang.StringUtils;

import org.json.JSONException;
import pt.webdetails.cdf.dd.DashboardManager;
import pt.webdetails.cdf.dd.util.XPathUtils;

public class CdaDataSourceReader {
    public static class CdaDataSource {
        String cdaSettings;
        String dataAccessId;

        CdaDataSource(JXPathContext dataSourceContext) {
            this(dataSourceContext, null);
        }

        CdaDataSource(JXPathContext dataSourceContext, String cdaSettings) {
            this.dataAccessId = XPathUtils.getStringValue(dataSourceContext, "properties/value[../name='name']");

            if (cdaSettings != null) {
                this.cdaSettings = cdaSettings;
            } else {
                if (XPathUtils.exists(dataSourceContext, "properties/value[../name='cdaPath']")) {
                    this.cdaSettings = XPathUtils.getStringValue(dataSourceContext,
                            "properties/value[../name='cdaPath']");
                } else {
                    this.cdaSettings = XPathUtils.getStringValue(dataSourceContext,
                            "properties/value[../name='solution']") + '/'
                            + XPathUtils.getStringValue(dataSourceContext, "properties/value[../name='path']") + '/'
                            + XPathUtils.getStringValue(dataSourceContext, "properties/value[../name='file']");
                }
            }
        }

        public CdaDataSource(String cdaSettings, String dataAccessId) {
            this.cdaSettings = cdaSettings;
            this.dataAccessId = dataAccessId;
        }

        public String toString() {
            return "{cdaSettingsId:'" + cdaSettings + "'"
                    + (dataAccessId != null ? (", dataAccessId:'" + dataAccessId + "'") : "") + "}";
        }
    }

    // TODO: The instance model
    // already has a DataSourceComponent list in the Dashboard object...
    public static List<CdaDataSource> getCdaDataSources(String dashboard) throws JSONException {
        JXPathContext context;

        try {
            context = DashboardManager.openDashboardAsJXPathContext(dashboard, /* wcdf */null);
        } catch (FileNotFoundException e) {
            return null;
        } catch (IOException e) {
            return null;
        }
        return getCdaDataSources(context);
    }

    protected static List<CdaDataSource> getCdaDataSources(JXPathContext docContext) {
        ArrayList<CdaDataSource> dataSources = new ArrayList<CdaDataSource>();
        //external
        @SuppressWarnings("unchecked")
        Iterator<Pointer> extDataSources = docContext
                .iteratePointers("/datasources/rows[properties/name='dataAccessId']");
        while (extDataSources.hasNext()) {
            Pointer source = extDataSources.next();
            if (!(source instanceof NullPointer)) {
                dataSources.add(new CdaDataSource(docContext.getRelativeContext(source)));
            }
        }

        @SuppressWarnings("unchecked")
        Iterator<Pointer> builtInDataSources = docContext.iteratePointers("/datasources/rows[meta='CDA']");
        if (builtInDataSources.hasNext()) {
            //built-in
            String fileName = XPathUtils.getStringValue(docContext, "/filename");
            if (StringUtils.endsWith(fileName, ".wcdf")) {
                fileName = StringUtils.replace(fileName, ".wcdf", ".cda");
            } else {
                fileName = StringUtils.replace(fileName, ".cdfde", ".cda");
            }
            //just add cda name
            dataSources.add(new CdaDataSource(fileName, null));
        }

        return dataSources;
    }
}