/libformula-1.1.3/source/org/pentaho/reporting/libraries/formula/function/datetime/DateFunction.java
Java | 76 lines | 44 code | 11 blank | 21 comment | 8 complexity | 70b28b34ec1ecad3a1750c814e6bef4a MD5 | raw file
Possible License(s): LGPL-2.1
- /*
- * 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) 2006 - 2009 Pentaho Corporation and Contributors. All rights reserved.
- */
- package org.pentaho.reporting.libraries.formula.function.datetime;
- 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.LocalizationContext;
- 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.TypeRegistry;
- import org.pentaho.reporting.libraries.formula.typing.coretypes.DateTimeType;
- import org.pentaho.reporting.libraries.formula.util.DateUtil;
- /**
- * Creation-Date: 04.11.2006, 18:59:11
- *
- * @author Thomas Morgner
- */
- public class DateFunction implements Function
- {
- private static final long serialVersionUID = 4956151361696995668L;
- public DateFunction()
- {
- }
- public String getCanonicalName()
- {
- return "DATE";
- }
- public TypeValuePair evaluate(final FormulaContext context,
- final ParameterCallback parameters) throws EvaluationException
- {
- if (parameters.getParameterCount() != 3)
- {
- throw EvaluationException.getInstance(LibFormulaErrorValue.ERROR_ARGUMENTS_VALUE);
- }
- final TypeRegistry typeRegistry = context.getTypeRegistry();
- final Number n1 = typeRegistry.convertToNumber(parameters.getType(0), parameters.getValue(0));
- final Number n2 = typeRegistry.convertToNumber(parameters.getType(1), parameters.getValue(1));
- final Number n3 = typeRegistry.convertToNumber(parameters.getType(2), parameters.getValue(2));
- if (n1 == null || n2 == null || n3 == null)
- {
- throw EvaluationException.getInstance(
- LibFormulaErrorValue.ERROR_INVALID_ARGUMENT_VALUE);
- }
- final LocalizationContext localizationContext = context
- .getLocalizationContext();
- final java.sql.Date date = DateUtil.createDate(n1.intValue(),
- n2.intValue(), n3.intValue(), localizationContext);
- return new TypeValuePair(DateTimeType.DATE_TYPE, date);
- }
- }