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/libformula-1.1.3/source/org/pentaho/reporting/libraries/formula/function/logical/TrueFunction.java

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Java | 56 lines | 29 code | 6 blank | 21 comment | 2 complexity | 9000e4a1a1a2350c38a7ebecd5c6627e MD5 | raw file
Possible License(s): LGPL-2.1
  1. /*
  2. * This program is free software; you can redistribute it and/or modify it under the
  3. * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
  4. * Foundation.
  5. *
  6. * You should have received a copy of the GNU Lesser General Public License along with this
  7. * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
  8. * or from the Free Software Foundation, Inc.,
  9. * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  10. *
  11. * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  12. * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13. * See the GNU Lesser General Public License for more details.
  14. *
  15. * Copyright (c) 2006 - 2009 Pentaho Corporation and Contributors. All rights reserved.
  16. */
  17. package org.pentaho.reporting.libraries.formula.function.logical;
  18. import org.pentaho.reporting.libraries.formula.EvaluationException;
  19. import org.pentaho.reporting.libraries.formula.FormulaContext;
  20. import org.pentaho.reporting.libraries.formula.LibFormulaErrorValue;
  21. import org.pentaho.reporting.libraries.formula.function.Function;
  22. import org.pentaho.reporting.libraries.formula.function.ParameterCallback;
  23. import org.pentaho.reporting.libraries.formula.lvalues.TypeValuePair;
  24. import org.pentaho.reporting.libraries.formula.typing.coretypes.LogicalType;
  25. /**
  26. * Creation-Date: 04.11.2006, 18:28:15
  27. *
  28. * @author Thomas Morgner
  29. */
  30. public class TrueFunction implements Function
  31. {
  32. private static final TypeValuePair RETURN_TRUE = new TypeValuePair(LogicalType.TYPE, Boolean.TRUE);
  33. private static final long serialVersionUID = 3103588076262714854L;
  34. public TrueFunction()
  35. {
  36. }
  37. public String getCanonicalName()
  38. {
  39. return "TRUE";
  40. }
  41. public TypeValuePair evaluate(final FormulaContext context,
  42. final ParameterCallback parameters) throws EvaluationException
  43. {
  44. if(parameters.getParameterCount() != 0)
  45. {
  46. throw EvaluationException.getInstance(LibFormulaErrorValue.ERROR_ARGUMENTS_VALUE);
  47. }
  48. return RETURN_TRUE;
  49. }
  50. }