1 /* GnomeXPathResult.java - 2 Copyright (C) 2004 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 package gnu.xml.libxmlj.dom; 39 40 import gnu.java.lang.CPStringBuilder; 41 42 import org.w3c.dom.DOMException; 43 import org.w3c.dom.Node; 44 import org.w3c.dom.xpath.XPathException; 45 import org.w3c.dom.xpath.XPathResult; 46 47 /** 48 * An XPath result object implemented in libxml2. 49 * 50 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> 51 */ 52 class GnomeXPathResult 53 implements XPathResult 54 { 55 56 /** 57 * xmlXPathObjectPtr 58 */ 59 final Object obj; 60 GnomeXPathResult(Object obj)61 GnomeXPathResult (Object obj) 62 { 63 this.obj = obj; 64 } 65 finalize()66 protected void finalize () 67 { 68 free (obj); 69 } 70 free(Object obj)71 private native void free (Object obj); 72 getResultType()73 public native short getResultType (); 74 getNumberValue()75 public native double getNumberValue () 76 throws XPathException; 77 getStringValue()78 public native String getStringValue () 79 throws XPathException; 80 getBooleanValue()81 public native boolean getBooleanValue () 82 throws XPathException; 83 getSingleNodeValue()84 public native Node getSingleNodeValue () 85 throws XPathException; 86 getInvalidIteratorState()87 public native boolean getInvalidIteratorState(); 88 getSnapshotLength()89 public native int getSnapshotLength () 90 throws XPathException; 91 iterateNext()92 public native Node iterateNext () 93 throws XPathException, DOMException; 94 snapshotItem(int index)95 public native Node snapshotItem (int index) 96 throws XPathException; 97 toString()98 public String toString () 99 { 100 short type = getResultType (); 101 switch (type) 102 { 103 case STRING_TYPE: 104 return getStringValue (); 105 case NUMBER_TYPE: 106 return Double.toString (getNumberValue ()); 107 case BOOLEAN_TYPE: 108 return Boolean.valueOf (getBooleanValue ()).toString (); 109 case UNORDERED_NODE_SNAPSHOT_TYPE: 110 int len = getSnapshotLength (); 111 switch (len) { 112 case 0: 113 return "[no matches]"; 114 case 1: 115 return getSingleNodeValue ().toString (); 116 default: 117 CPStringBuilder buffer = new CPStringBuilder (); 118 for (int i = 0; i < len; i++) 119 { 120 if (i > 0) 121 { 122 buffer.append (','); 123 } 124 buffer.append (snapshotItem (i)); 125 } 126 return buffer.toString (); 127 } 128 default: 129 return getClass ().getName () + "[type=" + type + ",length=" + 130 getSnapshotLength () + ']'; 131 } 132 } 133 134 } 135