2 Copyright (C) 2004 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
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)
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.
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
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
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. */
38 package gnu
.xml
.xpath
;
40 import java
.io
.IOException
;
41 import javax
.xml
.namespace
.NamespaceContext
;
42 import javax
.xml
.namespace
.QName
;
43 import javax
.xml
.xpath
.XPath
;
44 import javax
.xml
.xpath
.XPathExpression
;
45 import javax
.xml
.xpath
.XPathExpressionException
;
46 import javax
.xml
.xpath
.XPathFunctionResolver
;
47 import javax
.xml
.xpath
.XPathVariableResolver
;
48 import org
.xml
.sax
.InputSource
;
51 * JAXP XPath implementation.
53 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
55 public class XPathImpl
60 NamespaceContext namespaceContext
;
61 XPathVariableResolver variableResolver
;
62 XPathFunctionResolver functionResolver
;
64 XPathImpl(NamespaceContext namespaceContext
,
65 XPathVariableResolver variableResolver
,
66 XPathFunctionResolver functionResolver
)
68 parser
= new XPathParser();
69 this.namespaceContext
= namespaceContext
;
70 this.variableResolver
= variableResolver
;
71 this.functionResolver
= functionResolver
;
77 parser
.namespaceContext
= namespaceContext
;
78 parser
.variableResolver
= variableResolver
;
79 parser
.functionResolver
= functionResolver
;
82 public void setXPathVariableResolver(XPathVariableResolver resolver
)
84 parser
.variableResolver
= resolver
;
87 public XPathVariableResolver
getXPathVariableResolver()
89 return parser
.variableResolver
;
92 public void setXPathFunctionResolver(XPathFunctionResolver resolver
)
94 parser
.functionResolver
= resolver
;
97 public XPathFunctionResolver
getXPathFunctionResolver()
99 return parser
.functionResolver
;
102 public void setNamespaceContext(NamespaceContext nsContext
)
104 parser
.namespaceContext
= nsContext
;
107 public NamespaceContext
getNamespaceContext()
109 return parser
.namespaceContext
;
112 public XPathExpression
compile(String expression
)
113 throws XPathExpressionException
115 XPathTokenizer tokenizer
= new XPathTokenizer(expression
);
118 return (Expr
) parser
.yyparse(tokenizer
);
120 catch (IOException e
)
122 throw new XPathExpressionException(e
);
124 catch (XPathParser
.yyException e
)
126 throw new XPathExpressionException(expression
);
130 public Object
evaluate(String expression
,
133 throws XPathExpressionException
135 XPathExpression expr
= compile(expression
);
136 return expr
.evaluate(item
, returnType
);
139 public String
evaluate(String expression
,
141 throws XPathExpressionException
143 XPathExpression expr
= compile(expression
);
144 return expr
.evaluate(item
);
147 public Object
evaluate(String expression
,
150 throws XPathExpressionException
152 XPathExpression expr
= compile(expression
);
153 return expr
.evaluate(source
, returnType
);
156 public String
evaluate(String expression
,
158 throws XPathExpressionException
160 XPathExpression expr
= compile(expression
);
161 return expr
.evaluate(source
);