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Make jaxp code compile under JDK 1.1 (it used to only just run on 1.1)

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git-svn-id: https://svn.apache.org/repos/asf/xml/commons/trunk@225927 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
edwingo 2001-10-22 22:10:30 +00:00
parent 38a2b89e48
commit 23ce6ff1d8
2 changed files with 74 additions and 91 deletions
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79
java/external/src/javax/xml/parsers/FactoryFinder.java vendored
View File

@ -64,16 +64,18 @@ import java.util.Properties;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
/**
* This class is duplicated for each JAXP subpackage so keep it in
* sync. It is package private.
* This class is duplicated for each JAXP subpackage so keep it in sync.
* It is package private and therefore is not exposed as part of the JAXP
* API.
*
* This code is designed to implement the JAXP 1.1 spec pluggability
* feature and is designed to run on JDK version 1.1 and later including
* JVMs that perform early linking like the Microsoft JVM in IE 5. Note
* however that it must be compiled on a JDK version 1.2 or later system
* since it calls Thread#getContextClassLoader(). The code also runs both
* as part of an unbundled jar file and when bundled as part of the JDK.
* feature and is designed to both compile and run on JDK version 1.1 and
* later. The code also runs both as part of an unbundled jar file and
* when bundled as part of the JDK.
*/
class FactoryFinder {
/** Temp debug code - this will be removed after we test everything
@ -94,35 +96,37 @@ class FactoryFinder {
}
/**
* Figure out which ClassLoader to use. For JDK 1.2 and later use the
* context ClassLoader if possible. Note: we defer linking the class
* that calls an API only in JDK 1.2 until runtime so that we can catch
* LinkageError so that this code will run in older non-Sun JVMs such
* as the Microsoft JVM in IE.
*/
* Figure out which ClassLoader to use. For JDK 1.2 and later use
* the context ClassLoader.
*/
private static ClassLoader findClassLoader()
throws ConfigurationError
{
ClassLoader classLoader;
Method m = null;
try {
// Construct the name of the concrete class to instantiate
Class clazz = Class.forName(FactoryFinder.class.getName()
+ "$ClassLoaderFinderConcrete");
ClassLoaderFinder clf = (ClassLoaderFinder) clazz.newInstance();
classLoader = clf.getContextClassLoader();
} catch (LinkageError le) {
m = Thread.class.getMethod("getContextClassLoader", null);
} catch (NoSuchMethodException e) {
// Assume that we are running JDK 1.1, use the current ClassLoader
if (debug) {
debugPrintln("assuming JDK 1.1");
}
classLoader = FactoryFinder.class.getClassLoader();
} catch (ClassNotFoundException x) {
// This case should not normally happen. MS IE can throw this
// instead of a LinkageError the second time Class.forName() is
// called so assume that we are running JDK 1.1 and use the
// current ClassLoader
classLoader = FactoryFinder.class.getClassLoader();
} catch (Exception x) {
// Something abnormal happened so throw an error
throw new ConfigurationError(x.toString(), x);
}
try {
classLoader = (ClassLoader) m.invoke(Thread.currentThread(), null);
} catch (IllegalAccessException e) {
// assert(false)
throw new ConfigurationError("Unexpected IllegalAccessException",
e);
} catch (InvocationTargetException e) {
// assert(e.getTargetException() instanceof SecurityException)
throw new ConfigurationError("Unexpected InvocationTargetException",
e);
}
return classLoader;
}
@ -161,6 +165,8 @@ class FactoryFinder {
* @param fallbackClassName Implementation class name, if nothing else
* is found. Use null to mean no fallback.
*
* @exception FactoryFinder.ConfigurationError
*
* Package private so this code can be shared.
*/
static Object find(String factoryId, String fallbackClassName)
@ -173,7 +179,7 @@ class FactoryFinder {
String systemProp =
System.getProperty( factoryId );
if( systemProp!=null) {
debugPrintln("found system property" + systemProp);
debugPrintln("found system property " + systemProp);
return newInstance(systemProp, classLoader);
}
} catch (SecurityException se) {
@ -249,19 +255,4 @@ class FactoryFinder {
return exception;
}
}
/*
* The following nested classes allow getContextClassLoader() to be
* called only on JDK 1.2 and yet run in older JDK 1.1 JVMs
*/
private static abstract class ClassLoaderFinder {
abstract ClassLoader getContextClassLoader();
}
static class ClassLoaderFinderConcrete extends ClassLoaderFinder {
ClassLoader getContextClassLoader() {
return Thread.currentThread().getContextClassLoader();
}
}
}

86
java/external/src/javax/xml/transform/FactoryFinder.java vendored
View File

@ -47,9 +47,10 @@
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999-2001, Sun Microsystems,
* Inc., http://www.sun.com. For more information on the Apache Software
* Foundation, please see <http://www.apache.org/>.
*/
package javax.xml.transform;
@ -63,16 +64,18 @@ import java.util.Properties;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
/**
* This class is duplicated for each JAXP subpackage so keep it in
* sync. It is package private.
* This class is duplicated for each JAXP subpackage so keep it in sync.
* It is package private and therefore is not exposed as part of the JAXP
* API.
*
* This code is designed to implement the JAXP 1.1 spec pluggability
* feature and is designed to run on JDK version 1.1 and later including
* JVMs that perform early linking like the Microsoft JVM in IE 5. Note
* however that it must be compiled on a JDK version 1.2 or later system
* since it calls Thread#getContextClassLoader(). The code also runs both
* as part of an unbundled jar file and when bundled as part of the JDK.
* feature and is designed to both compile and run on JDK version 1.1 and
* later. The code also runs both as part of an unbundled jar file and
* when bundled as part of the JDK.
*/
class FactoryFinder {
/** Temp debug code - this will be removed after we test everything
@ -93,35 +96,37 @@ class FactoryFinder {
}
/**
* Figure out which ClassLoader to use. For JDK 1.2 and later use the
* context ClassLoader if possible. Note: we defer linking the class
* that calls an API only in JDK 1.2 until runtime so that we can catch
* LinkageError so that this code will run in older non-Sun JVMs such
* as the Microsoft JVM in IE.
*/
* Figure out which ClassLoader to use. For JDK 1.2 and later use
* the context ClassLoader.
*/
private static ClassLoader findClassLoader()
throws ConfigurationError
{
ClassLoader classLoader;
Method m = null;
try {
// Construct the name of the concrete class to instantiate
Class clazz = Class.forName(FactoryFinder.class.getName()
+ "$ClassLoaderFinderConcrete");
ClassLoaderFinder clf = (ClassLoaderFinder) clazz.newInstance();
classLoader = clf.getContextClassLoader();
} catch (LinkageError le) {
m = Thread.class.getMethod("getContextClassLoader", null);
} catch (NoSuchMethodException e) {
// Assume that we are running JDK 1.1, use the current ClassLoader
if (debug) {
debugPrintln("assuming JDK 1.1");
}
classLoader = FactoryFinder.class.getClassLoader();
} catch (ClassNotFoundException x) {
// This case should not normally happen. MS IE can throw this
// instead of a LinkageError the second time Class.forName() is
// called so assume that we are running JDK 1.1 and use the
// current ClassLoader
classLoader = FactoryFinder.class.getClassLoader();
} catch (Exception x) {
// Something abnormal happened so throw an error
throw new ConfigurationError(x.toString(), x);
}
try {
classLoader = (ClassLoader) m.invoke(Thread.currentThread(), null);
} catch (IllegalAccessException e) {
// assert(false)
throw new ConfigurationError("Unexpected IllegalAccessException",
e);
} catch (InvocationTargetException e) {
// assert(e.getTargetException() instanceof SecurityException)
throw new ConfigurationError("Unexpected InvocationTargetException",
e);
}
return classLoader;
}
@ -160,6 +165,8 @@ class FactoryFinder {
* @param fallbackClassName Implementation class name, if nothing else
* is found. Use null to mean no fallback.
*
* @exception FactoryFinder.ConfigurationError
*
* Package private so this code can be shared.
*/
static Object find(String factoryId, String fallbackClassName)
@ -172,7 +179,7 @@ class FactoryFinder {
String systemProp =
System.getProperty( factoryId );
if( systemProp!=null) {
debugPrintln("found system property" + systemProp);
debugPrintln("found system property " + systemProp);
return newInstance(systemProp, classLoader);
}
} catch (SecurityException se) {
@ -248,19 +255,4 @@ class FactoryFinder {
return exception;
}
}
/*
* The following nested classes allow getContextClassLoader() to be
* called only on JDK 1.2 and yet run in older JDK 1.1 JVMs
*/
private static abstract class ClassLoaderFinder {
abstract ClassLoader getContextClassLoader();
}
static class ClassLoaderFinderConcrete extends ClassLoaderFinder {
ClassLoader getContextClassLoader() {
return Thread.currentThread().getContextClassLoader();
}
}
}