jdk8-mips64-public/corba: src/share/classes/com/sun/corba/se/spi/orb/OperationFactory.java@39d15bbb5741 (annotated)

src/share/classes/com/sun/corba/se/spi/orb/OperationFactory.java@39d15bbb5741 (annotated)

src/share/classes/com/sun/corba/se/spi/orb/OperationFactory.java

Mon, 08 Apr 2013 23:12:03 +0100

author: coffeys
date: Mon, 08 Apr 2013 23:12:03 +0100
changeset 475: 39d15bbb5741
parent 205: b2fff4b7e8cd
child 748: 6845b95cba6b
permissions: -rw-r--r--

8001032: Restrict object access
Summary: Restrict object access; fix reviewed also by Alexander Fomin
Reviewed-by: alanb, ahgross

 /*
  * Copyright (c) 2002, 2013, 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
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.corba.se.spi.orb ;
 import java.util.StringTokenizer ;
 import java.util.Arrays ;
 import java.lang.reflect.Array ;
 import java.net.URL ;
 import java.net.MalformedURLException ;
 import com.sun.corba.se.spi.logging.CORBALogDomains ;
 import com.sun.corba.se.impl.logging.ORBUtilSystemException ;
 import com.sun.corba.se.impl.orbutil.ObjectUtility ;
 import sun.corba.SharedSecrets;
 /** This is a static factory class for commonly used operations
 * for property parsing.  The following operations are supported:
 * <ul>
 * <li>maskErrorAction( Operation op ) executes op and returns the result.  If op throws an
 * exception, the result is null.
 * <li>indexAction( int arg ) returns the [arg] element of value, which must be an Object[]</li>
 * <li>identityAction() return the value</li>
 * <li>booleanAction() return a Boolean representing true or false values of the String value</li>
 * <li>integerAction() returns an Integer for the String value, which must be a decimal integer</li>
 * <li>stringAction() returns the String value</li>
 * <li>classAction() returns a class for the String value, as loaded by the ORB classloader</li>
 * <li>setFlagAction() always return Boolean.TRUE</li>
 * <li>URLAction() returns a java.net.URL for the String value, which must be a valid URL</li>
 * <li>integerRangeAction( int min, int max ) returns an Integer for the String value, which must be a
 * decimal integer in the range min to max inclusive</li>
 * <li>listAction( String sep, Operation ) tokenizes the String value with sep as separator, then
 * applies the Operation to each token, and returns an array of the result</li>
 * <li>sequenceAction( String, Operation[] ) tokenizes the String value with sep as separator, then
 * applies each Operation in the Operation array to successive tokens, and returns an array of the results</li>
 * <li>compose( Operation op1, Operation op2 ) is the operation that applies op2 to the result of applying
 * op1 to the value</li>
 * <li>mapAction( Operation ) applies the Operation to each element of an array of objects, and returns
 * an array of the results</li>
 * <li>mapSequenceAction( Operation[] ) applies the corresponding element of the Operation array to an
 * element of the Object[] value, and returns an array of the results</li>
 * <li>convertIntegerToShort coerces an Integer into a Short.</li>
 * </ul>
 * Other operations can be directly defined, and combined using these basic operations.
 */
 public abstract class OperationFactory {
     private OperationFactory() {}
     private static String getString( Object obj )
     {
         if (obj instanceof String)
             return (String)obj ;
         else
             throw new Error( "String expected" ) ;
     }
     private static Object[] getObjectArray( Object obj )
     {
         if (obj instanceof Object[])
             return (Object[])obj ;
         else
             throw new Error( "Object[] expected" ) ;
     }
     private static StringPair getStringPair( Object obj )
     {
         if (obj instanceof StringPair)
             return (StringPair)obj ;
         else
             throw new Error( "StringPair expected" ) ;
     }
     private static abstract class OperationBase implements Operation{
         public boolean equals( Object obj )
         {
             if (this==obj)
                 return true ;
             if (!(obj instanceof OperationBase))
                 return false ;
             OperationBase other = (OperationBase)obj ;
             return toString().equals( other.toString() ) ;
         }
         public int hashCode()
         {
             return toString().hashCode() ;
         }
     }
     private static class MaskErrorAction extends OperationBase
     {
         private Operation op ;
         public MaskErrorAction( Operation op )
         {
             this.op = op ;
         }
         public Object operate( Object arg )
         {
             try {
                 return op.operate( arg ) ;
             } catch (java.lang.Exception exc) {
                 return null ;
             }
         }
         public String toString()
         {
             return "maskErrorAction(" + op + ")" ;
         }
     }
     public static Operation maskErrorAction( Operation op )
     {
         return new MaskErrorAction( op ) ;
     }
     private static class IndexAction extends OperationBase
     {
         private int index ;
         public IndexAction( int index )
         {
             this.index = index ;
         }
         public Object operate( Object value )
         {
             return getObjectArray( value )[ index ] ;
         }
         public String toString()
         {
             return "indexAction(" + index + ")" ;
         }
     }
     public static Operation indexAction( int index )
     {
         return new IndexAction( index ) ;
     }
     private static class SuffixAction extends OperationBase
     {
         public Object operate( Object value )
         {
             return getStringPair( value ).getFirst() ;
         }
         public String toString() { return "suffixAction" ; }
     }
     private static Operation suffixActionImpl = new SuffixAction() ;
     private static class ValueAction extends OperationBase
     {
         public Object operate( Object value )
         {
             return getStringPair( value ).getSecond() ;
         }
         public String toString() { return "valueAction" ; }
     }
     private static Operation valueActionImpl = new ValueAction() ;
     private static class IdentityAction extends OperationBase
     {
         public Object operate( Object value )
         {
             return value ;
         }
         public String toString() { return "identityAction" ; }
     }
     private static Operation identityActionImpl = new IdentityAction() ;
     private static class BooleanAction extends OperationBase
     {
         public Object operate( Object value )
         {
             return new Boolean( getString( value ) ) ;
         }
         public String toString() { return "booleanAction" ; }
     }
     private static Operation booleanActionImpl = new BooleanAction() ;
     private static class IntegerAction extends OperationBase
     {
         public Object operate( Object value )
         {
             return new Integer( getString( value ) ) ;
         }
         public String toString() { return "integerAction" ; }
     }
     private static Operation integerActionImpl = new IntegerAction() ;
     private static class StringAction extends OperationBase
     {
         public Object operate( Object value )
         {
             return value ;
         }
         public String toString() { return "stringAction" ; }
     }
     private static Operation stringActionImpl = new StringAction() ;
     private static class ClassAction extends OperationBase
     {
         public Object operate( Object value )
         {
             String className = getString( value ) ;
             try {
                 Class<?> result =
                     SharedSecrets.getJavaCorbaAccess().loadClass( className ) ;
                 return result ;
             } catch (Exception exc) {
                 ORBUtilSystemException wrapper = ORBUtilSystemException.get(
                     CORBALogDomains.ORB_LIFECYCLE ) ;
                 throw wrapper.couldNotLoadClass( exc, className ) ;
             }
         }
         public String toString() { return "classAction" ; }
     }
     private static Operation classActionImpl = new ClassAction() ;
     private static class SetFlagAction extends OperationBase
     {
         public Object operate( Object value )
         {
             return Boolean.TRUE ;
         }
         public String toString() { return "setFlagAction" ; }
     }
     private static Operation setFlagActionImpl = new SetFlagAction() ;
     private static class URLAction extends OperationBase
     {
         public Object operate( Object value )
         {
             String val = (String)value ;
             try {
                 return new URL( val ) ;
             } catch (MalformedURLException exc) {
                 ORBUtilSystemException wrapper = ORBUtilSystemException.get(
                     CORBALogDomains.ORB_LIFECYCLE ) ;
                 throw wrapper.badUrl( exc, val ) ;
             }
         }
         public String toString() { return "URLAction" ; }
     }
     private static Operation URLActionImpl = new URLAction() ;
     public static Operation identityAction()
     {
         return identityActionImpl ;
     }
     public static Operation suffixAction()
     {
         return suffixActionImpl ;
     }
     public static Operation valueAction()
     {
         return valueActionImpl ;
     }
     public static Operation booleanAction()
     {
         return booleanActionImpl ;
     }
     public static Operation integerAction()
     {
         return integerActionImpl ;
     }
     public static Operation stringAction()
     {
         return stringActionImpl ;
     }
     public static Operation classAction()
     {
         return classActionImpl ;
     }
     public static Operation setFlagAction()
     {
         return setFlagActionImpl ;
     }
     public static Operation URLAction()
     {
         return URLActionImpl ;
     }
     private static class IntegerRangeAction extends OperationBase
     {
         private int min ;
         private int max ;
         IntegerRangeAction( int min, int max )
         {
             this.min = min ;
             this.max = max ;
         }
         public Object operate( Object value )
         {
             int result = Integer.parseInt( getString( value ) ) ;
             if ((result >= min) && (result <= max))
                 return new Integer( result ) ;
             else
                 throw new IllegalArgumentException(
                     "Property value " + result + " is not in the range " +
                     min + " to " + max ) ;
         }
         public String toString() {
             return "integerRangeAction(" + min + "," + max + ")" ;
         }
     }
     public static Operation integerRangeAction( int min, int max )
     {
         return new IntegerRangeAction( min, max ) ;
     }
     private static class ListAction extends OperationBase {
         private String sep ;
         private Operation act ;
         ListAction( String sep, Operation act )
         {
             this.sep = sep ;
             this.act = act ;
         }
         // Note that this method carefully constructs an array of the type
         // of the first result, rather than just using Object[], which is
         // not convertible into the correct type.  Also note that no tokens
         // results in a null result.
         public Object operate( Object value )
         {
             StringTokenizer st = new StringTokenizer( getString( value ),
                 sep ) ;
             int length = st.countTokens() ;
             Object result = null ;
             int ctr = 0 ;
             while (st.hasMoreTokens()) {
                 String next = st.nextToken() ;
                 Object val = act.operate( next ) ;
                 if (result == null)
                     result = Array.newInstance( val.getClass(), length ) ;
                 Array.set( result, ctr++, val ) ;
             }
             return result ;
         }
         public String toString() {
             return "listAction(separator=\"" + sep +
                 "\",action=" + act + ")" ;
         }
     }
     public static Operation listAction( String sep, Operation act )
     {
         return new ListAction( sep, act ) ;
     }
     private static class SequenceAction extends OperationBase
     {
         private String sep ;
         private Operation[] actions ;
         SequenceAction( String sep, Operation[] actions )
         {
             this.sep = sep ;
             this.actions = actions ;
         }
         public Object operate( Object value )
         {
             StringTokenizer st = new StringTokenizer( getString( value ),
                 sep ) ;
             int numTokens = st.countTokens() ;
             if (numTokens != actions.length)
                 throw new Error(
                     "Number of tokens and number of actions do not match" ) ;
             int ctr = 0 ;
             Object[] result = new Object[ numTokens ] ;
             while (st.hasMoreTokens()) {
                 Operation act = actions[ctr] ;
                 String next = st.nextToken() ;
                 result[ctr++] = act.operate( next ) ;
             }
             return result ;
         }
         public String toString() {
             return "sequenceAction(separator=\"" + sep +
                 "\",actions=" +
                 Arrays.toString(actions) + ")" ;
         }
     }
     public static Operation sequenceAction( String sep,
         Operation[] actions )
     {
         return new SequenceAction( sep, actions ) ;
     }
     private static class ComposeAction extends OperationBase
     {
         private Operation op1 ;
         private Operation op2 ;
         ComposeAction( Operation op1, Operation op2 )
         {
             this.op1 = op1 ;
             this.op2 = op2 ;
         }
         public Object operate( Object value )
         {
             return op2.operate( op1.operate( value ) ) ;
         }
         public String toString() {
             return "composition(" + op1 + "," + op2 + ")" ;
         }
     }
     public static Operation compose( Operation op1, Operation op2 )
     {
         return new ComposeAction( op1, op2 ) ;
     }
     private static class MapAction extends OperationBase
     {
         Operation op ;
         MapAction( Operation op )
         {
             this.op = op ;
         }
         public Object operate( Object value )
         {
             Object[] values = (Object[])value ;
             Object[] result = new Object[ values.length ] ;
             for (int ctr=0; ctr<values.length; ctr++ )
                 result[ctr] = op.operate( values[ctr] ) ;
             return result ;
         }
         public String toString() {
             return "mapAction(" + op + ")" ;
         }
     }
     public static Operation mapAction( Operation op )
     {
         return new MapAction( op ) ;
     }
     private static class MapSequenceAction extends OperationBase
     {
         private Operation[] op ;
         public MapSequenceAction( Operation[] op )
         {
             this.op = op ;
         }
         // XXX Does this correctly handle array types?  It seems
         // that hetereogeneous arrays work this way, while
         // homogeneous arrays need to use Array.newInstance tricks.
         public Object operate( Object value )
         {
             Object[] values = (Object[])value ;
             Object[] result = new Object[ values.length ] ;
             for (int ctr=0; ctr<values.length; ctr++ )
                 result[ctr] = op[ctr].operate( values[ctr] ) ;
             return result ;
         }
         public String toString() {
             return "mapSequenceAction(" +
                 Arrays.toString(op) + ")" ;
         }
     }
     public static Operation mapSequenceAction( Operation[] op )
     {
         return new MapSequenceAction( op ) ;
     }
     private static class ConvertIntegerToShort extends OperationBase
     {
         public Object operate( Object value )
         {
             Integer val = (Integer)value ;
             return new Short( val.shortValue() ) ;
         }
         public String toString() {
             return "ConvertIntegerToShort" ;
         }
     }
     private static Operation convertIntegerToShortImpl = new ConvertIntegerToShort() ;
     public static Operation convertIntegerToShort()
     {
         return convertIntegerToShortImpl ;
     }
 }

Mercurial > jdk8-mips64-public > corba / annotate

src/share/classes/com/sun/corba/se/spi/orb/OperationFactory.java@39d15bbb5741 (annotated)

src/share/classes/com/sun/corba/se/spi/orb/OperationFactory.java