Author: mturk
Date: Mon Apr 11 15:21:11 2011
New Revision: 1091099
URL: http://svn.apache.org/viewvc?rev=1091099&view=rev
Log:
Add reflection helper classes
Added:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedClass.java
(with props)
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedField.java
(with props)
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedFieldImpl.java
(with props)
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethod.java
(with props)
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethodImpl.java
(with props)
Modified:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/Reflect.java
commons/sandbox/runtime/trunk/src/main/native/shared/reflect.c
commons/sandbox/runtime/trunk/src/main/test/org/apache/commons/runtime/TestReflect.java
Modified:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/Reflect.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/Reflect.java?rev=1091099&r1=1091098&r2=1091099&view=diff
==============================================================================
---
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/Reflect.java
(original)
+++
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/Reflect.java
Mon Apr 11 15:21:11 2011
@@ -24,7 +24,7 @@ import java.lang.reflect.Method;
* @since Runtime 1.0
*
*/
-public final class Reflect
+class Reflect
{
private Reflect()
@@ -32,22 +32,18 @@ public final class Reflect
// No instance.
}
- private static native Class get0(String name)
+ private static native Class findClass0(String name)
throws NoClassDefFoundError, OutOfMemoryError;
- private static native Class get1(String name, boolean weakReference)
- throws NoClassDefFoundError, OutOfMemoryError;
- private static native long get2(Class clazz, String name, String
signature, boolean isStatic)
+ private static native long getMethod0(Class clazz, String name, String
signature, boolean isStatic)
throws NoSuchMethodError, OutOfMemoryError;
- private static native long get3(Class clazz, String name, String
signature, boolean isStatic)
+ private static native long getField0(Class clazz, String name, String
signature, boolean isStatic)
throws NoSuchFieldError, OutOfMemoryError;
- private static native Method get4(long methodID)
+ private static native Method toMethod0(Class clazz, long methodID, boolean
isStatic)
throws OutOfMemoryError;
- private static native Field get5(long fieldID)
+ private static native Field toField0(Class clazz, long fieldID, boolean
isStatic)
throws OutOfMemoryError;
- private static native Object new0(Class clazz)
+ private static native Object allocObject0(Class clazz)
throws InstantiationException, OutOfMemoryError;
- private static native void clr0(Object inst);
- private static native void clr1(Object inst);
/**
* Allocates a new java.lang.Object without invoking any
@@ -58,7 +54,7 @@ public final class Reflect
{
if (clazz == null)
throw new IllegalArgumentException();
- return new0(clazz);
+ return allocObject0(clazz);
}
public static Class findClass(String name)
@@ -66,7 +62,47 @@ public final class Reflect
{
if (name == null)
throw new IllegalArgumentException();
- return get0(name);
+ return findClass0(name);
+ }
+
+ public static long getConstructorID(Class clazz, String signature)
+ throws IllegalArgumentException, NoSuchMethodError, OutOfMemoryError
+ {
+ if (clazz == null || signature == null)
+ throw new IllegalArgumentException();
+ return getMethod0(clazz, "<init>", signature, false);
+ }
+
+ public static long getMethodID(Class clazz, String name, String signature,
boolean isStatic)
+ throws IllegalArgumentException, NoSuchMethodError, OutOfMemoryError
+ {
+ if (clazz == null || name == null || signature == null)
+ throw new IllegalArgumentException();
+ return getMethod0(clazz, name, signature, isStatic);
+ }
+
+ public static long getFieldID(Class clazz, String name, String signature,
boolean isStatic)
+ throws IllegalArgumentException, NoSuchFieldError, OutOfMemoryError
+ {
+ if (clazz == null || name == null || signature == null)
+ throw new IllegalArgumentException();
+ return getField0(clazz, name, signature, isStatic);
+ }
+
+ public static Method toMethod(Class clazz, long methodID, boolean isStatic)
+ throws IllegalArgumentException, OutOfMemoryError
+ {
+ if (clazz == null || methodID == 0)
+ throw new IllegalArgumentException();
+ return toMethod0(clazz, methodID, isStatic);
}
-
+
+ public static Field toField(Class clazz, long fieldID, boolean isStatic)
+ throws IllegalArgumentException, OutOfMemoryError
+ {
+ if (clazz == null || fieldID == 0)
+ throw new IllegalArgumentException();
+ return toField0(clazz, fieldID, isStatic);
+ }
+
}
Added:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedClass.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedClass.java?rev=1091099&view=auto
==============================================================================
---
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedClass.java
(added)
+++
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedClass.java
Mon Apr 11 15:21:11 2011
@@ -0,0 +1,94 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.runtime;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * JVM reflection support.
+ *
+ * @since Runtime 1.0
+ *
+ */
+public final class ReflectedClass
+{
+
+ private Class clazz;
+
+ private ReflectedClass()
+ {
+ // No instance.
+ }
+
+ public ReflectedClass(String name)
+ throws IllegalArgumentException, NoClassDefFoundError, OutOfMemoryError
+ {
+ clazz = Reflect.findClass(name);
+ }
+
+ public ReflectedClass(Class cls)
+ throws IllegalArgumentException, NoClassDefFoundError, OutOfMemoryError
+ {
+ clazz = Reflect.findClass(cls.getCanonicalName());
+ }
+
+ /**
+ * Allocates a new java.lang.Object without invoking any
+ * of the constructors for the object.
+ */
+ public Object allocObject()
+ throws IllegalArgumentException, InstantiationException,
OutOfMemoryError
+ {
+ return Reflect.allocObject(clazz);
+ }
+
+ public ReflectedMethod getConstructor(String signature)
+ throws IllegalArgumentException, NoSuchMethodError, OutOfMemoryError
+ {
+ return new ReflectedMethodImpl(clazz, signature);
+ }
+
+ public ReflectedMethod getMethod(String name, String signature)
+ throws IllegalArgumentException, NoSuchMethodError, OutOfMemoryError
+ {
+ return new ReflectedMethodImpl(clazz, name, signature, false);
+ }
+
+ public ReflectedMethod getStaticMethod(String name, String signature)
+ throws IllegalArgumentException, NoSuchMethodError, OutOfMemoryError
+ {
+ return new ReflectedMethodImpl(clazz, name, signature, true);
+ }
+
+ public ReflectedField getField(String name, String signature)
+ throws IllegalArgumentException, NoSuchFieldError, OutOfMemoryError
+ {
+ return new ReflectedFieldImpl(clazz, name, signature, false);
+ }
+
+ public ReflectedField getStaticField(String name, String signature)
+ throws IllegalArgumentException, NoSuchFieldError, OutOfMemoryError
+ {
+ return new ReflectedFieldImpl(clazz, name, signature, true);
+ }
+
+ @Override
+ public String toString()
+ {
+ return clazz.getCanonicalName();
+ }
+}
Propchange:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedClass.java
------------------------------------------------------------------------------
svn:eol-style = native
Added:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedField.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedField.java?rev=1091099&view=auto
==============================================================================
---
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedField.java
(added)
+++
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedField.java
Mon Apr 11 15:21:11 2011
@@ -0,0 +1,56 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.runtime;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * JVM reflection support.
+ *
+ * @since Runtime 1.0
+ *
+ */
+public abstract class ReflectedField
+{
+
+ protected Class clazz;
+ protected long fieldID;
+ protected boolean isStatic;
+
+ protected ReflectedField()
+ {
+ }
+
+ public ReflectedField(Class clazz, String name, String signature, boolean
isStatic)
+ throws IllegalArgumentException, NoSuchFieldError, OutOfMemoryError
+ {
+ this.isStatic = isStatic;
+ this.clazz = clazz;
+ fieldID = Reflect.getMethodID(clazz, name, signature, isStatic);
+ }
+
+ public Field toField()
+ throws IllegalArgumentException, OutOfMemoryError
+ {
+ return Reflect.toField(clazz, fieldID, isStatic);
+ }
+
+ public boolean isStatic()
+ {
+ return isStatic;
+ }
+}
Propchange:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedField.java
------------------------------------------------------------------------------
svn:eol-style = native
Added:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedFieldImpl.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedFieldImpl.java?rev=1091099&view=auto
==============================================================================
---
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedFieldImpl.java
(added)
+++
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedFieldImpl.java
Mon Apr 11 15:21:11 2011
@@ -0,0 +1,38 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.runtime;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * JVM reflection support.
+ *
+ * @since Runtime 1.0
+ *
+ */
+class ReflectedFieldImpl extends ReflectedField
+{
+
+ public ReflectedFieldImpl(Class clazz, String name, String signature,
boolean isStatic)
+ throws IllegalArgumentException, NoSuchFieldError, OutOfMemoryError
+ {
+ this.isStatic = isStatic;
+ this.clazz = clazz;
+ fieldID = Reflect.getMethodID(clazz, name, signature, isStatic);
+ }
+
+}
Propchange:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedFieldImpl.java
------------------------------------------------------------------------------
svn:eol-style = native
Added:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethod.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethod.java?rev=1091099&view=auto
==============================================================================
---
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethod.java
(added)
+++
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethod.java
Mon Apr 11 15:21:11 2011
@@ -0,0 +1,48 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.runtime;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * JVM reflection support.
+ *
+ * @since Runtime 1.0
+ *
+ */
+public abstract class ReflectedMethod
+{
+
+ protected Class clazz;
+ protected long methodID;
+ protected boolean isStatic;
+
+ protected ReflectedMethod()
+ {
+ }
+
+ public Method toMethod()
+ throws IllegalArgumentException, OutOfMemoryError
+ {
+ return Reflect.toMethod(clazz, methodID, isStatic);
+ }
+
+ public boolean isStatic()
+ {
+ return isStatic;
+ }
+}
Propchange:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethod.java
------------------------------------------------------------------------------
svn:eol-style = native
Added:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethodImpl.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethodImpl.java?rev=1091099&view=auto
==============================================================================
---
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethodImpl.java
(added)
+++
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethodImpl.java
Mon Apr 11 15:21:11 2011
@@ -0,0 +1,46 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.runtime;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * JVM reflection support.
+ *
+ * @since Runtime 1.0
+ *
+ */
+class ReflectedMethodImpl extends ReflectedMethod
+{
+
+ public ReflectedMethodImpl(Class clazz, String signature)
+ throws IllegalArgumentException, NoSuchMethodError, OutOfMemoryError
+ {
+ this.clazz = clazz;
+ methodID = Reflect.getConstructorID(clazz, signature);
+ isStatic = false;
+ }
+
+ public ReflectedMethodImpl(Class clazz, String name, String signature,
boolean isStatic)
+ throws IllegalArgumentException, NoSuchMethodError, OutOfMemoryError
+ {
+ this.isStatic = isStatic;
+ this.clazz = clazz;
+ methodID = Reflect.getMethodID(clazz, name, signature, isStatic);
+ }
+
+}
Propchange:
commons/sandbox/runtime/trunk/src/main/java/org/apache/commons/runtime/ReflectedMethodImpl.java
------------------------------------------------------------------------------
svn:eol-style = native
Modified: commons/sandbox/runtime/trunk/src/main/native/shared/reflect.c
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/native/shared/reflect.c?rev=1091099&r1=1091098&r2=1091099&view=diff
==============================================================================
--- commons/sandbox/runtime/trunk/src/main/native/shared/reflect.c (original)
+++ commons/sandbox/runtime/trunk/src/main/native/shared/reflect.c Mon Apr 11
15:21:11 2011
@@ -26,7 +26,7 @@ ACR_INLINE(void) _jni_classname(char *na
}
}
-ACR_JNI_EXPORT(jobject, Reflect, get0)(JNI_STDARGS, jstring name)
+ACR_JNI_EXPORT(jobject, Reflect, findClass0)(JNI_STDARGS, jstring name)
{
jobject c = 0;
WITH_CSTR(name) {
@@ -39,30 +39,11 @@ ACR_JNI_EXPORT(jobject, Reflect, get0)(J
return c;
}
-ACR_JNI_EXPORT(jobject, Reflect, get1)(JNI_STDARGS, jstring name,
- jboolean isWeak)
-{
- jobject c = 0;
- WITH_CSTR(name) {
- _jni_classname(J2S(name));
- c = (jobject)(*_E)->FindClass(_E, J2S(name));
- if (c != 0) {
- /* Can throw OutOfMemoryError */
- if (isWeak)
- c = (*_E)->NewWeakGlobalRef(_E, c);
- else
- c = (*_E)->NewGlobalRef(_E, c);
- }
- }
- DONE_WITH_STR(name);
- return c;
-}
-
-ACR_JNI_EXPORT(jlong, Reflect, get2)(JNI_STDARGS,
- jclass clazz,
- jstring name,
- jstring sig,
- jboolean isStatic)
+ACR_JNI_EXPORT(jlong, Reflect, getMethod0)(JNI_STDARGS,
+ jclass clazz,
+ jstring name,
+ jstring sig,
+ jboolean isStatic)
{
jlong id = 0;
@@ -79,11 +60,11 @@ ACR_JNI_EXPORT(jlong, Reflect, get2)(JNI
return id;
}
-ACR_JNI_EXPORT(jlong, Reflect, get3)(JNI_STDARGS,
- jclass clazz,
- jstring name,
- jstring sig,
- jboolean isStatic)
+ACR_JNI_EXPORT(jlong, Reflect, getField0)(JNI_STDARGS,
+ jclass clazz,
+ jstring name,
+ jstring sig,
+ jboolean isStatic)
{
jlong id = 0;
@@ -100,44 +81,28 @@ ACR_JNI_EXPORT(jlong, Reflect, get3)(JNI
return id;
}
-ACR_JNI_EXPORT(jobject, Reflect, get4)(JNI_STDARGS,
- jclass clazz,
- jlong methodId,
- jboolean isStatic)
+ACR_JNI_EXPORT(jobject, Reflect, toMethod0)(JNI_STDARGS,
+ jclass clazz,
+ jlong methodId,
+ jboolean isStatic)
{
return (*_E)->ToReflectedMethod(_E, clazz, J2P(methodId, jmethodID),
isStatic);
}
-ACR_JNI_EXPORT(jobject, Reflect, get5)(JNI_STDARGS,
- jclass clazz,
- jlong fieldId,
- jboolean isStatic)
+ACR_JNI_EXPORT(jobject, Reflect, toField0)(JNI_STDARGS,
+ jclass clazz,
+ jlong fieldId,
+ jboolean isStatic)
{
return (*_E)->ToReflectedField(_E, clazz, J2P(fieldId, jfieldID),
isStatic);
}
-ACR_JNI_EXPORT(jint, Reflect, get6)(JNI_STDARGS,
- jobject obj)
+ACR_JNI_EXPORT(jint, Reflect, getRefType0)(JNI_STDARGS, jobject obj)
{
return (jint)(*_E)->GetObjectRefType(_E, obj);
}
-ACR_JNI_EXPORT(jobject, Reflect, new0)(JNI_STDARGS,
- jclass clazz)
+ACR_JNI_EXPORT(jobject, Reflect, allocObject0)(JNI_STDARGS, jclass clazz)
{
return (*_E)->AllocObject(_E, clazz);
}
-
-ACR_JNI_EXPORT(void, Reflect, clr0)(JNI_STDARGS, jobject obj)
-{
- jobject o = (*_E)->NewLocalRef(_E, obj);
- if (o != 0) {
- (*_E)->DeleteWeakGlobalRef(_E, obj);
- (*_E)->DeleteLocalRef(_E, o);
- }
-}
-
-ACR_JNI_EXPORT(void, Reflect, clr1)(JNI_STDARGS, jobject obj)
-{
- (*_E)->DeleteGlobalRef(_E, obj);
-}
Modified:
commons/sandbox/runtime/trunk/src/main/test/org/apache/commons/runtime/TestReflect.java
URL:
http://svn.apache.org/viewvc/commons/sandbox/runtime/trunk/src/main/test/org/apache/commons/runtime/TestReflect.java?rev=1091099&r1=1091098&r2=1091099&view=diff
==============================================================================
---
commons/sandbox/runtime/trunk/src/main/test/org/apache/commons/runtime/TestReflect.java
(original)
+++
commons/sandbox/runtime/trunk/src/main/test/org/apache/commons/runtime/TestReflect.java
Mon Apr 11 15:21:11 2011
@@ -46,4 +46,15 @@ public class TestReflect
Assert.assertEquals("", o.toString());
}
+ @Test(groups = { "utils" })
+ public void testReflectedClass()
+ throws Exception
+ {
+ // Uses JNI class naming.
+ ReflectedClass cl = new ReflectedClass("java/lang/System");
+ Assert.assertEquals("java.lang.System", cl.toString());
+ ReflectedMethod m = cl.getStaticMethod("load",
"(Ljava/lang/String;)V");
+ Assert.assertNotNull(m);
+ }
+
}
