src/share/classes/java/lang/reflect/Constructor.java
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@@ -1,7 +1,7 @@
/*
- * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
@@ -25,17 +25,16 @@
package java.lang.reflect;
import sun.reflect.ConstructorAccessor;
import sun.reflect.Reflection;
+import sun.reflect.annotation.AnnotationParser;
import sun.reflect.generics.repository.ConstructorRepository;
import sun.reflect.generics.factory.CoreReflectionFactory;
import sun.reflect.generics.factory.GenericsFactory;
import sun.reflect.generics.scope.ConstructorScope;
import java.lang.annotation.Annotation;
-import java.util.Map;
-import sun.reflect.annotation.AnnotationParser;
import java.lang.annotation.AnnotationFormatError;
import java.lang.reflect.Modifier;
/**
* {@code Constructor} provides information about, and access to, a single
@@ -55,15 +54,11 @@
* @see java.lang.Class#getDeclaredConstructors()
*
* @author Kenneth Russell
* @author Nakul Saraiya
*/
-public final
- class Constructor<T> extends AccessibleObject implements
- GenericDeclaration,
- Member {
-
+public final class Constructor<T> extends Executable {
private Class<T> clazz;
private int slot;
private Class<?>[] parameterTypes;
private Class<?>[] exceptionTypes;
private int modifiers;
@@ -80,11 +75,12 @@
// create scope and factory
return CoreReflectionFactory.make(this, ConstructorScope.make(this));
}
// Accessor for generic info repository
- private ConstructorRepository getGenericInfo() {
+ @Override
+ ConstructorRepository getGenericInfo() {
// lazily initialize repository if necessary
if (genericInfo == null) {
// create and cache generic info repository
genericInfo =
ConstructorRepository.make(getSignature(),
@@ -109,12 +105,11 @@
Class<?>[] checkedExceptions,
int modifiers,
int slot,
String signature,
byte[] annotations,
- byte[] parameterAnnotations)
- {
+ byte[] parameterAnnotations) {
this.clazz = declaringClass;
this.parameterTypes = parameterTypes;
this.exceptionTypes = checkedExceptions;
this.modifiers = modifiers;
this.slot = slot;
@@ -146,152 +141,98 @@
// Might as well eagerly propagate this if already present
res.constructorAccessor = constructorAccessor;
return res;
}
+ @Override
+ boolean hasGenericInformation() {
+ return (getSignature() != null);
+ }
+
+ @Override
+ byte[] getAnnotationBytes() {
+ return annotations;
+ }
+
/**
- * Returns the {@code Class} object representing the class that declares
- * the constructor represented by this {@code Constructor} object.
+ * {@inheritDoc}
*/
+ @Override
public Class<T> getDeclaringClass() {
return clazz;
}
/**
* Returns the name of this constructor, as a string. This is
* the binary name of the constructor's declaring class.
*/
+ @Override
public String getName() {
return getDeclaringClass().getName();
}
/**
- * Returns the Java language modifiers for the constructor
- * represented by this {@code Constructor} object, as an integer. The
- * {@code Modifier} class should be used to decode the modifiers.
- *
- * @see Modifier
+ * {@inheritDoc}
*/
+ @Override
public int getModifiers() {
return modifiers;
}
/**
- * Returns an array of {@code TypeVariable} objects that represent the
- * type variables declared by the generic declaration represented by this
- * {@code GenericDeclaration} object, in declaration order. Returns an
- * array of length 0 if the underlying generic declaration declares no type
- * variables.
- *
- * @return an array of {@code TypeVariable} objects that represent
- * the type variables declared by this generic declaration
- * @throws GenericSignatureFormatError if the generic
- * signature of this generic declaration does not conform to
- * the format specified in
- * <cite>The Java™ Virtual Machine Specification</cite>
+ * {@inheritDoc}
+ * @throws GenericSignatureFormatError {@inheritDoc}
* @since 1.5
*/
+ @Override
public TypeVariable<Constructor<T>>[] getTypeParameters() {
if (getSignature() != null) {
return (TypeVariable<Constructor<T>>[])getGenericInfo().getTypeParameters();
} else
return (TypeVariable<Constructor<T>>[])new TypeVariable[0];
}
/**
- * Returns an array of {@code Class} objects that represent the formal
- * parameter types, in declaration order, of the constructor
- * represented by this {@code Constructor} object. Returns an array of
- * length 0 if the underlying constructor takes no parameters.
- *
- * @return the parameter types for the constructor this object
- * represents
+ * {@inheritDoc}
*/
+ @Override
public Class<?>[] getParameterTypes() {
return (Class<?>[]) parameterTypes.clone();
}
-
/**
- * Returns an array of {@code Type} objects that represent the formal
- * parameter types, in declaration order, of the method represented by
- * this {@code Constructor} object. Returns an array of length 0 if the
- * underlying method takes no parameters.
- *
- * <p>If a formal parameter type is a parameterized type,
- * the {@code Type} object returned for it must accurately reflect
- * the actual type parameters used in the source code.
- *
- * <p>If a formal parameter type is a type variable or a parameterized
- * type, it is created. Otherwise, it is resolved.
- *
- * @return an array of {@code Type}s that represent the formal
- * parameter types of the underlying method, in declaration order
- * @throws GenericSignatureFormatError
- * if the generic method signature does not conform to the format
- * specified in
- * <cite>The Java™ Virtual Machine Specification</cite>
- * @throws TypeNotPresentException if any of the parameter
- * types of the underlying method refers to a non-existent type
- * declaration
- * @throws MalformedParameterizedTypeException if any of
- * the underlying method's parameter types refer to a parameterized
- * type that cannot be instantiated for any reason
+ * {@inheritDoc}
+ * @throws GenericSignatureFormatError {@inheritDoc}
+ * @throws TypeNotPresentException {@inheritDoc}
+ * @throws MalformedParameterizedTypeException {@inheritDoc}
* @since 1.5
*/
+ @Override
public Type[] getGenericParameterTypes() {
- if (getSignature() != null)
- return getGenericInfo().getParameterTypes();
- else
- return getParameterTypes();
+ return super.getGenericParameterTypes();
}
-
/**
- * Returns an array of {@code Class} objects that represent the types
- * of exceptions declared to be thrown by the underlying constructor
- * represented by this {@code Constructor} object. Returns an array of
- * length 0 if the constructor declares no exceptions in its {@code throws} clause.
- *
- * @return the exception types declared as being thrown by the
- * constructor this object represents
+ * {@inheritDoc}
*/
+ @Override
public Class<?>[] getExceptionTypes() {
return (Class<?>[])exceptionTypes.clone();
}
/**
- * Returns an array of {@code Type} objects that represent the
- * exceptions declared to be thrown by this {@code Constructor} object.
- * Returns an array of length 0 if the underlying method declares
- * no exceptions in its {@code throws} clause.
- *
- * <p>If an exception type is a type variable or a parameterized
- * type, it is created. Otherwise, it is resolved.
- *
- * @return an array of Types that represent the exception types
- * thrown by the underlying method
- * @throws GenericSignatureFormatError
- * if the generic method signature does not conform to the format
- * specified in
- * <cite>The Java™ Virtual Machine Specification</cite>
- * @throws TypeNotPresentException if the underlying method's
- * {@code throws} clause refers to a non-existent type declaration
- * @throws MalformedParameterizedTypeException if
- * the underlying method's {@code throws} clause refers to a
- * parameterized type that cannot be instantiated for any reason
+ * {@inheritDoc}
+ * @throws GenericSignatureFormatError {@inheritDoc}
+ * @throws TypeNotPresentException {@inheritDoc}
+ * @throws MalformedParameterizedTypeException {@inheritDoc}
* @since 1.5
*/
+ @Override
public Type[] getGenericExceptionTypes() {
- Type[] result;
- if (getSignature() != null &&
- ( (result = getGenericInfo().getExceptionTypes()).length > 0 ))
- return result;
- else
- return getExceptionTypes();
+ return super.getGenericExceptionTypes();
}
/**
* Compares this {@code Constructor} against the specified object.
* Returns true if the objects are the same. Two {@code Constructor} objects are
@@ -300,20 +241,11 @@
*/
public boolean equals(Object obj) {
if (obj != null && obj instanceof Constructor) {
Constructor<?> other = (Constructor<?>)obj;
if (getDeclaringClass() == other.getDeclaringClass()) {
- /* Avoid unnecessary cloning */
- Class<?>[] params1 = parameterTypes;
- Class<?>[] params2 = other.parameterTypes;
- if (params1.length == params2.length) {
- for (int i = 0; i < params1.length; i++) {
- if (params1[i] != params2[i])
- return false;
- }
- return true;
- }
+ return equalParamTypes(parameterTypes, other.parameterTypes);
}
}
return false;
}
@@ -340,38 +272,18 @@
* modifiers {@code public}, {@code protected} or
* {@code private}. Only one of these may appear, or none if the
* constructor has default (package) access.
*/
public String toString() {
- try {
- StringBuffer sb = new StringBuffer();
- int mod = getModifiers() & Modifier.constructorModifiers();
- if (mod != 0) {
- sb.append(Modifier.toString(mod) + " ");
+ return sharedToString(Modifier.constructorModifiers(),
+ parameterTypes,
+ exceptionTypes);
}
+
+ @Override
+ void specificToStringHeader(StringBuilder sb) {
sb.append(Field.getTypeName(getDeclaringClass()));
- sb.append("(");
- Class<?>[] params = parameterTypes; // avoid clone
- for (int j = 0; j < params.length; j++) {
- sb.append(Field.getTypeName(params[j]));
- if (j < (params.length - 1))
- sb.append(",");
- }
- sb.append(")");
- Class<?>[] exceptions = exceptionTypes; // avoid clone
- if (exceptions.length > 0) {
- sb.append(" throws ");
- for (int k = 0; k < exceptions.length; k++) {
- sb.append(exceptions[k].getName());
- if (k < (exceptions.length - 1))
- sb.append(",");
- }
- }
- return sb.toString();
- } catch (Exception e) {
- return "<" + e + ">";
- }
}
/**
* Returns a string describing this {@code Constructor},
* including type parameters. The string is formatted as the
@@ -403,60 +315,18 @@
* @return a string describing this {@code Constructor},
* include type parameters
*
* @since 1.5
*/
+ @Override
public String toGenericString() {
- try {
- StringBuilder sb = new StringBuilder();
- int mod = getModifiers() & Modifier.constructorModifiers();
- if (mod != 0) {
- sb.append(Modifier.toString(mod) + " ");
- }
- TypeVariable<?>[] typeparms = getTypeParameters();
- if (typeparms.length > 0) {
- boolean first = true;
- sb.append("<");
- for(TypeVariable<?> typeparm: typeparms) {
- if (!first)
- sb.append(",");
- // Class objects can't occur here; no need to test
- // and call Class.getName().
- sb.append(typeparm.toString());
- first = false;
- }
- sb.append("> ");
- }
- sb.append(Field.getTypeName(getDeclaringClass()));
- sb.append("(");
- Type[] params = getGenericParameterTypes();
- for (int j = 0; j < params.length; j++) {
- String param = (params[j] instanceof Class<?>)?
- Field.getTypeName((Class<?>)params[j]):
- (params[j].toString());
- if (isVarArgs() && (j == params.length - 1)) // replace T[] with T...
- param = param.replaceFirst("\\[\\]$", "...");
- sb.append(param);
- if (j < (params.length - 1))
- sb.append(",");
- }
- sb.append(")");
- Type[] exceptions = getGenericExceptionTypes();
- if (exceptions.length > 0) {
- sb.append(" throws ");
- for (int k = 0; k < exceptions.length; k++) {
- sb.append((exceptions[k] instanceof Class)?
- ((Class<?>)exceptions[k]).getName():
- exceptions[k].toString());
- if (k < (exceptions.length - 1))
- sb.append(",");
- }
- }
- return sb.toString();
- } catch (Exception e) {
- return "<" + e + ">";
+ return sharedToGenericString(Modifier.constructorModifiers());
}
+
+ @Override
+ void specificToGenericStringHeader(StringBuilder sb) {
+ specificToStringHeader(sb);
}
/**
* Uses the constructor represented by this {@code Constructor} object to
* create and initialize a new instance of the constructor's
@@ -524,33 +394,25 @@
}
return (T) ca.newInstance(initargs);
}
/**
- * Returns {@code true} if this constructor was declared to take
- * a variable number of arguments; returns {@code false}
- * otherwise.
- *
- * @return {@code true} if an only if this constructor was declared to
- * take a variable number of arguments.
+ * {@inheritDoc}
* @since 1.5
*/
+ @Override
public boolean isVarArgs() {
- return (getModifiers() & Modifier.VARARGS) != 0;
+ return super.isVarArgs();
}
/**
- * Returns {@code true} if this constructor is a synthetic
- * constructor; returns {@code false} otherwise.
- *
- * @return true if and only if this constructor is a synthetic
- * constructor as defined by
- * <cite>The Java™ Language Specification</cite>.
+ * {@inheritDoc}
* @since 1.5
*/
+ @Override
public boolean isSynthetic() {
- return Modifier.isSynthetic(getModifiers());
+ return super.isSynthetic();
}
// NOTE that there is no synchronization used here. It is correct
// (though not efficient) to generate more than one
// ConstructorAccessor for a given Constructor. However, avoiding
@@ -602,82 +464,52 @@
byte[] getRawParameterAnnotations() {
return parameterAnnotations;
}
+
/**
+ * {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
* @since 1.5
*/
public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
- if (annotationClass == null)
- throw new NullPointerException();
-
- return (T) declaredAnnotations().get(annotationClass);
+ return super.getAnnotation(annotationClass);
}
/**
+ * {@inheritDoc}
* @since 1.5
*/
public Annotation[] getDeclaredAnnotations() {
- return AnnotationParser.toArray(declaredAnnotations());
- }
-
- private transient Map<Class<? extends Annotation>, Annotation> declaredAnnotations;
-
- private synchronized Map<Class<? extends Annotation>, Annotation> declaredAnnotations() {
- if (declaredAnnotations == null) {
- declaredAnnotations = AnnotationParser.parseAnnotations(
- annotations, sun.misc.SharedSecrets.getJavaLangAccess().
- getConstantPool(getDeclaringClass()),
- getDeclaringClass());
- }
- return declaredAnnotations;
+ return super.getDeclaredAnnotations();
}
/**
- * Returns an array of arrays that represent the annotations on the formal
- * parameters, in declaration order, of the method represented by
- * this {@code Constructor} object. (Returns an array of length zero if the
- * underlying method is parameterless. If the method has one or more
- * parameters, a nested array of length zero is returned for each parameter
- * with no annotations.) The annotation objects contained in the returned
- * arrays are serializable. The caller of this method is free to modify
- * the returned arrays; it will have no effect on the arrays returned to
- * other callers.
- *
- * @return an array of arrays that represent the annotations on the formal
- * parameters, in declaration order, of the method represented by this
- * Constructor object
+ * {@inheritDoc}
* @since 1.5
*/
+ @Override
public Annotation[][] getParameterAnnotations() {
- int numParameters = parameterTypes.length;
- if (parameterAnnotations == null)
- return new Annotation[numParameters][0];
-
- Annotation[][] result = AnnotationParser.parseParameterAnnotations(
- parameterAnnotations,
- sun.misc.SharedSecrets.getJavaLangAccess().
- getConstantPool(getDeclaringClass()),
- getDeclaringClass());
- if (result.length != numParameters) {
+ return sharedGetParameterAnnotations(parameterTypes, parameterAnnotations);
+ }
+
+ @Override
+ void handleParameterNumberMismatch(int resultLength, int numParameters) {
Class<?> declaringClass = getDeclaringClass();
if (declaringClass.isEnum() ||
declaringClass.isAnonymousClass() ||
declaringClass.isLocalClass() )
- ; // Can't do reliable parameter counting
+ return ; // Can't do reliable parameter counting
else {
if (!declaringClass.isMemberClass() || // top-level
// Check for the enclosing instance parameter for
// non-static member classes
(declaringClass.isMemberClass() &&
((declaringClass.getModifiers() & Modifier.STATIC) == 0) &&
- result.length + 1 != numParameters) ) {
+ resultLength + 1 != numParameters) ) {
throw new AnnotationFormatError(
"Parameter annotations don't match number of parameters");
}
}
}
- return result;
- }
}