AbstractMDXDataFactoryBundleWriteHandler.java example

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* Foundation.
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* See the GNU Lesser General Public License for more details.
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package org.pentaho.reporting.engine.classic.extensions.datasources.mondrian.writer;

import org.pentaho.reporting.engine.classic.core.ClassicEngineBoot;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PasswordEncryptionService;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer.BundleDataFactoryWriterHandler;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer.BundleWriterException;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.writer.BundleWriterState;
import org.pentaho.reporting.engine.classic.extensions.datasources.mondrian.AbstractMDXDataFactory;
import org.pentaho.reporting.engine.classic.extensions.datasources.mondrian.CubeFileProvider;
import org.pentaho.reporting.engine.classic.extensions.datasources.mondrian.DataSourceProvider;
import org.pentaho.reporting.engine.classic.extensions.datasources.mondrian.MondrianDataFactoryModule;
import org.pentaho.reporting.libraries.base.config.Configuration;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.docbundle.WriteableDocumentBundle;
import org.pentaho.reporting.libraries.xmlns.common.AttributeList;
import org.pentaho.reporting.libraries.xmlns.writer.DefaultTagDescription;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriter;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriterSupport;

import java.io.IOException;
import java.util.Properties;

public abstract class AbstractMDXDataFactoryBundleWriteHandler
  implements BundleDataFactoryWriterHandler {
  protected void writeBody( final WriteableDocumentBundle bundle,
                            final BundleWriterState state,
                            final AbstractMDXDataFactory mdxDataFactory,
                            final XmlWriter xmlWriter ) throws IOException, BundleWriterException {

    final AttributeList configAttrs = new AttributeList();
    if ( mdxDataFactory.getJdbcPassword() != null ) {
      configAttrs.setAttribute( MondrianDataFactoryModule.NAMESPACE,
        "jdbc-password", String.valueOf( mdxDataFactory.getJdbcPassword() ) );
    }
    if ( mdxDataFactory.getJdbcUser() != null ) {
      configAttrs.setAttribute( MondrianDataFactoryModule.NAMESPACE,
        "jdbc-user", String.valueOf( mdxDataFactory.getJdbcUser() ) );
    }
    if ( mdxDataFactory.getRole() != null ) {
      configAttrs.setAttribute( MondrianDataFactoryModule.NAMESPACE,
        "role", String.valueOf( mdxDataFactory.getRole() ) );
    }
    if ( mdxDataFactory.getJdbcPasswordField() != null ) {
      configAttrs.setAttribute( MondrianDataFactoryModule.NAMESPACE,
        "jdbc-password-field", String.valueOf( mdxDataFactory.getJdbcPasswordField() ) );
    }
    if ( mdxDataFactory.getJdbcUserField() != null ) {
      configAttrs.setAttribute( MondrianDataFactoryModule.NAMESPACE,
        "jdbc-user-field", String.valueOf( mdxDataFactory.getJdbcUserField() ) );
    }
    if ( mdxDataFactory.getRoleField() != null ) {
      configAttrs.setAttribute( MondrianDataFactoryModule.NAMESPACE,
        "role-field", String.valueOf( mdxDataFactory.getRoleField() ) );
    }
    if ( mdxDataFactory.getDesignTimeName() != null ) {
      configAttrs.setAttribute( MondrianDataFactoryModule.NAMESPACE,
        "design-time-name", String.valueOf( mdxDataFactory.getDesignTimeName() ) );
    }
    writeProperties( xmlWriter, mdxDataFactory.getBaseConnectionProperties(), "mondrian-properties" );

    xmlWriter.writeTag( MondrianDataFactoryModule.NAMESPACE, "connection", configAttrs, XmlWriter.OPEN );

    final DataSourceProvider dataSourceProvider = mdxDataFactory.getDataSourceProvider();
    if ( dataSourceProvider != null ) {
      writeConnectionInfo( bundle, state, xmlWriter, dataSourceProvider );
    }
    final CubeFileProvider cubeFileProvider = mdxDataFactory.getCubeFileProvider();
    if ( cubeFileProvider != null ) {
      writeCubeInfo( bundle, state, xmlWriter, cubeFileProvider );
    }

    xmlWriter.writeCloseTag();
  }

  private void writeConnectionInfo( final WriteableDocumentBundle bundle,
                                    final BundleWriterState state,
                                    final XmlWriter xmlWriter,
                                    final DataSourceProvider connectionProvider )
    throws IOException, BundleWriterException {
    final String configKey =
      MondrianDataFactoryModule.DATASOURCE_BUNDLEWRITER_PREFIX + connectionProvider.getClass().getName();
    final Configuration globalConfig = ClassicEngineBoot.getInstance().getGlobalConfig();
    final String value = globalConfig.getConfigProperty( configKey );
    if ( value == null ) {
      throw new BundleWriterException( "Unable to locate writer for " + connectionProvider.getClass().getName() );
    }
    final DataSourceProviderBundleWriteHandler handler = ObjectUtilities.loadAndInstantiate
      ( value, AbstractMDXDataFactoryBundleWriteHandler.class, DataSourceProviderBundleWriteHandler.class );
    if ( handler == null ) {
      throw new BundleWriterException( "Invalid write-handler for " + connectionProvider.getClass().getName() );
    }
    handler.write( bundle, state, xmlWriter, connectionProvider );
  }

  private void writeProperties( final XmlWriter writer,
                                final Properties properties,
                                final String tagName ) throws IOException {
    if ( properties.isEmpty() ) {
      return;
    }
    writer.writeTag( MondrianDataFactoryModule.NAMESPACE, tagName, XmlWriterSupport.OPEN );
    final String[] propertyNames = properties.keySet().toArray( new String[ properties.size() ] );
    for ( int i = 0; i < propertyNames.length; i++ ) {
      final String name = propertyNames[ i ];
      final String value = properties.getProperty( name );
      writer.writeTag( MondrianDataFactoryModule.NAMESPACE,
        "property", "name", name, XmlWriterSupport.OPEN );
      if ( name.toLowerCase().contains( "password" ) ) {
        writer.writeTextNormalized( PasswordEncryptionService.getInstance().encrypt( value ), false );
      } else {
        writer.writeTextNormalized( value, false );
      }
      writer.writeCloseTag();
    }
    writer.writeCloseTag();
  }

  private void writeCubeInfo( final WriteableDocumentBundle bundle,
                              final BundleWriterState state,
                              final XmlWriter xmlWriter,
                              final CubeFileProvider cubeFileProvider )
    throws IOException, BundleWriterException {
    final String configKey =
      MondrianDataFactoryModule.CUBEFILE_BUNDLEWRITER_PREFIX + cubeFileProvider.getClass().getName();
    final Configuration globalConfig = ClassicEngineBoot.getInstance().getGlobalConfig();
    final String value = globalConfig.getConfigProperty( configKey );
    if ( value == null ) {
      throw new BundleWriterException( "Unable to locate writer for " + cubeFileProvider.getClass().getName() );
    }

    final CubeFileProviderBundleWriteHandler handler = ObjectUtilities.loadAndInstantiate
      ( value, AbstractMDXDataFactoryWriteHandler.class, CubeFileProviderBundleWriteHandler.class );
    if ( handler == null ) {
      throw new BundleWriterException( "Invalid write-handler for " + cubeFileProvider.getClass().getName() );
    }
    handler.write( bundle, state, xmlWriter, cubeFileProvider );
  }

  protected DefaultTagDescription createTagDescription() {
    final DefaultTagDescription tagDescription = new DefaultTagDescription();
    tagDescription.setNamespaceHasCData( MondrianDataFactoryModule.NAMESPACE, false );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "driver", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "path", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "property", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "url", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "global-script", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "static-query", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "script", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "cube-filename", true );
    tagDescription.setElementHasCData( MondrianDataFactoryModule.NAMESPACE, "cube-connection-name", true );
    return tagDescription;
  }

}