/*!
* 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) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.function.formula;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.util.beans.BeanException;
import org.pentaho.reporting.engine.classic.core.util.beans.ConverterRegistry;
import org.pentaho.reporting.libraries.base.util.URLEncoder;
import org.pentaho.reporting.libraries.formula.EvaluationException;
import org.pentaho.reporting.libraries.formula.FormulaContext;
import org.pentaho.reporting.libraries.formula.LibFormulaErrorValue;
import org.pentaho.reporting.libraries.formula.function.Function;
import org.pentaho.reporting.libraries.formula.function.ParameterCallback;
import org.pentaho.reporting.libraries.formula.lvalues.TypeValuePair;
import org.pentaho.reporting.libraries.formula.typing.Type;
import org.pentaho.reporting.libraries.formula.typing.TypeUtil;
import org.pentaho.reporting.libraries.formula.typing.coretypes.TextType;
import java.io.UnsupportedEncodingException;
public class MParameterTextFunction implements Function {
private static final Log logger = LogFactory.getLog( MParameterTextFunction.class );
public MParameterTextFunction() {
}
public String getCanonicalName() {
return "MPARAMETERTEXT";
}
public TypeValuePair evaluate( final FormulaContext context, final ParameterCallback parameters )
throws EvaluationException {
final int parameterCount = parameters.getParameterCount();
if ( parameterCount < 2 || parameterCount > 4 ) {
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_ARGUMENTS_VALUE );
}
Object rawValue = parameters.getValue( 0 );
if ( rawValue instanceof Object[] == false ) {
rawValue = TypeUtil.normalize( context.getTypeRegistry().convertToSequence( parameters.getType( 0 ), rawValue ) );
}
final String parameterName =
context.getTypeRegistry().convertToText( parameters.getType( 1 ), parameters.getValue( 1 ) );
final String encodingResult;
final boolean urlEncode;
if ( parameterCount > 2 ) {
urlEncode =
!( Boolean.FALSE.equals( context.getTypeRegistry().convertToLogical( parameters.getType( 2 ),
parameters.getValue( 2 ) ) ) );
if ( parameterCount == 4 ) {
final Type encodingType = parameters.getType( 3 );
final Object encodingValue = parameters.getValue( 3 );
encodingResult = context.getTypeRegistry().convertToText( encodingType, encodingValue );
if ( encodingResult == null ) {
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_INVALID_ARGUMENT_VALUE );
}
} else {
encodingResult =
context.getConfiguration().getConfigProperty( "org.pentaho.reporting.libraries.formula.URLEncoding",
"UTF-8" );
}
} else {
urlEncode = true;
encodingResult =
context.getConfiguration().getConfigProperty( "org.pentaho.reporting.libraries.formula.URLEncoding", "UTF-8" );
}
try {
final Object[] value = (Object[]) rawValue;
final StringBuffer b = new StringBuffer( 1000 );
for ( int i = 0; i < value.length; i++ ) {
if ( i != 0 ) {
b.append( "&" );
b.append( URLEncoder.encode( parameterName, encodingResult ) );
b.append( "=" );
}
final String s;
try {
final Object o = value[i];
s = ConverterRegistry.toAttributeValue( o );
} catch ( BeanException e ) {
// ok, so what. Log and return error
logger.warn( "MPARAMETERTEXT: Failed to convert value " + rawValue + " (" + rawValue.getClass() + ")", e );
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_UNEXPECTED_VALUE );
}
if ( s == null ) {
continue;
}
if ( urlEncode ) {
b.append( URLEncoder.encode( s, encodingResult ) );
} else {
b.append( s );
}
}
return new TypeValuePair( TextType.TYPE, b.toString() );
} catch ( final UnsupportedEncodingException use ) {
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_INVALID_ARGUMENT_VALUE );
}
}
}