1. /*
  2. * The Apache Software License, Version 1.1
  3. *
  4. *
  5. * Copyright (c) 1999 The Apache Software Foundation. All rights
  6. * reserved.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. *
  12. * 1. Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. *
  15. * 2. Redistributions in binary form must reproduce the above copyright
  16. * notice, this list of conditions and the following disclaimer in
  17. * the documentation and/or other materials provided with the
  18. * distribution.
  19. *
  20. * 3. The end-user documentation included with the redistribution,
  21. * if any, must include the following acknowledgment:
  22. * "This product includes software developed by the
  23. * Apache Software Foundation (http://www.apache.org/)."
  24. * Alternately, this acknowledgment may appear in the software itself,
  25. * if and wherever such third-party acknowledgments normally appear.
  26. *
  27. * 4. The names "Xalan" and "Apache Software Foundation" must
  28. * not be used to endorse or promote products derived from this
  29. * software without prior written permission. For written
  30. * permission, please contact apache@apache.org.
  31. *
  32. * 5. Products derived from this software may not be called "Apache",
  33. * nor may "Apache" appear in their name, without prior written
  34. * permission of the Apache Software Foundation.
  35. *
  36. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  37. * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  38. * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  39. * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
  40. * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  42. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  43. * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  44. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  45. * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  46. * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  47. * SUCH DAMAGE.
  48. * ====================================================================
  49. *
  50. * This software consists of voluntary contributions made by many
  51. * individuals on behalf of the Apache Software Foundation and was
  52. * originally based on software copyright (c) 1999, Lotus
  53. * Development Corporation., http://www.lotus.com. For more
  54. * information on the Apache Software Foundation, please see
  55. * <http://www.apache.org/>.
  56. */
  57. package org.apache.xpath.functions;
  58. //import org.w3c.dom.Node;
  59. import java.util.Vector;
  60. import org.apache.xpath.XPathContext;
  61. import org.apache.xpath.XPath;
  62. import org.apache.xpath.objects.XObject;
  63. import org.apache.xpath.objects.XBoolean;
  64. /**
  65. * <meta name="usage" content="advanced"/>
  66. * Execute the Contains() function.
  67. */
  68. public class FuncContains extends Function2Args
  69. {
  70. /**
  71. * Execute the function. The function must return
  72. * a valid object.
  73. * @param xctxt The current execution context.
  74. * @return A valid XObject.
  75. *
  76. * @throws javax.xml.transform.TransformerException
  77. */
  78. public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
  79. {
  80. String s1 = m_arg0.execute(xctxt).str();
  81. String s2 = m_arg1.execute(xctxt).str();
  82. // Add this check for JDK consistency for empty strings.
  83. if (s1.length() == 0 && s2.length() == 0)
  84. return XBoolean.S_TRUE;
  85. int index = s1.indexOf(s2);
  86. return (index > -1) ? XBoolean.S_TRUE : XBoolean.S_FALSE;
  87. }
  88. }