/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.metadata;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.ReportElement;
import org.pentaho.reporting.engine.classic.core.filter.MessageFormatSupport;
import org.pentaho.reporting.libraries.docbundle.BundleUtilities;
import org.pentaho.reporting.libraries.formula.parser.ParseException;
import org.pentaho.reporting.libraries.formula.util.FormulaUtil;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceKeyCreationException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import java.util.ArrayList;
public class DefaultAttributeCore implements AttributeCore {
private static final String[] EMPTY = new String[0];
private static final ResourceReference[] EMPTY_RESOURCES = new ResourceReference[0];
public DefaultAttributeCore() {
}
public String[] getReferencedFields( final AttributeMetaData metaData, final ReportElement element,
final Object attributeValue ) {
if ( element == null ) {
throw new NullPointerException();
}
if ( attributeValue == null ) {
return EMPTY;
}
final String valueRole = metaData.getValueRole();
if ( "Field".equals( valueRole ) ) {
if ( attributeValue instanceof String[] ) {
final String[] vals = (String[]) attributeValue;
return vals.clone();
}
return new String[] { String.valueOf( attributeValue ) };
} else if ( "Message".equals( valueRole ) ) {
final String message = String.valueOf( attributeValue );
final MessageFormatSupport messageFormatSupport = new MessageFormatSupport();
messageFormatSupport.setFormatString( message );
return messageFormatSupport.getFields();
} else if ( "Formula".equals( valueRole ) ) {
final String formula = String.valueOf( attributeValue );
try {
final Object[] objects = FormulaUtil.getReferences( formula );
final ArrayList<String> list = new ArrayList<String>();
for ( int i = 0; i < objects.length; i++ ) {
final Object object = objects[i];
if ( object instanceof String ) {
list.add( (String) object );
}
}
return list.toArray( new String[list.size()] );
} catch ( ParseException e ) {
return EMPTY;
}
}
return EMPTY;
}
public String[] getReferencedGroups( final AttributeMetaData metaData, final ReportElement element,
final Object attributeValue ) {
final String valueRole = metaData.getValueRole();
if ( element == null ) {
throw new NullPointerException();
}
if ( attributeValue == null ) {
return EMPTY;
}
if ( "Group".equals( valueRole ) ) {
if ( attributeValue instanceof String[] ) {
final String[] attrVal = (String[]) attributeValue;
return attrVal.clone();
}
return new String[] { String.valueOf( attributeValue ) };
}
return EMPTY;
}
public ResourceReference[] getReferencedResources( final AttributeMetaData metaData, final ReportElement element,
final ResourceManager resourceManager, final Object attributeValue ) {
if ( element == null ) {
throw new NullPointerException();
}
if ( resourceManager == null ) {
throw new NullPointerException();
}
final String valueRole = metaData.getValueRole();
if ( "Content".equals( valueRole ) ) {
final ResourceKey contentBase = getContentBase( element );
final ResourceKey elementSource = getDefinitionSource( element );
if ( attributeValue instanceof ResourceKey ) {
final ResourceKey path = (ResourceKey) attributeValue;
final boolean linked = BundleUtilities.isSameBundle( elementSource, path );
return new ResourceReference[] { new ResourceReference( path, linked ) };
} else if ( attributeValue instanceof String && contentBase != null ) {
try {
// not a resource-key, so try to make one ..
final ResourceKey path = resourceManager.deriveKey( contentBase, String.valueOf( attributeValue ) );
// the content base may not point to a bundle location, so that the path does not point to a
// bundle location as well. If linked is computed to false, we can be sure that the resource is loaded
// from within the bundle, which means that the attribute value was a relative path inside the bundle.
final boolean linked = BundleUtilities.isSameBundle( elementSource, path ) == false;
return new ResourceReference[] { new ResourceReference( path, linked ) };
} catch ( ResourceKeyCreationException rce ) {
// ignore ..
}
} else if ( attributeValue != null ) {
try {
// not a resource-key, so try to make one ..
final ResourceKey path = resourceManager.createKey( attributeValue );
final boolean linked = BundleUtilities.isSameBundle( elementSource, path ) == false;
return new ResourceReference[] { new ResourceReference( path, linked ) };
} catch ( ResourceKeyCreationException rce ) {
// ignore ..
}
}
}
return EMPTY_RESOURCES;
}
protected ResourceKey getDefinitionSource( final ReportElement element ) {
final Object o = element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.SOURCE );
if ( o instanceof ResourceKey ) {
return (ResourceKey) o;
}
final ReportElement parent = element.getParentSection();
if ( parent != null ) {
return getDefinitionSource( parent );
}
return null;
}
protected ResourceKey getContentBase( final ReportElement element ) {
final Object o = element.getAttribute( AttributeNames.Core.NAMESPACE, AttributeNames.Core.CONTENT_BASE );
if ( o instanceof ResourceKey ) {
return (ResourceKey) o;
}
final ReportElement parent = element.getParentSection();
if ( parent != null ) {
return getContentBase( parent );
}
return null;
}
public String[] getExtraCalculationFields( final AttributeMetaData metaData ) {
return new String[0];
}
}