| /* |
| * Copyright (c) 2000, 2003, 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.impl.dynamicany; |
| |
| import org.omg.CORBA.TypeCode; |
| import org.omg.CORBA.Any; |
| import org.omg.CORBA.BAD_OPERATION; |
| import org.omg.CORBA.TypeCodePackage.BadKind; |
| import org.omg.CORBA.TypeCodePackage.Bounds; |
| import org.omg.CORBA.portable.InputStream; |
| import org.omg.CORBA.portable.OutputStream; |
| import org.omg.DynamicAny.*; |
| import org.omg.DynamicAny.DynAnyPackage.TypeMismatch; |
| import org.omg.DynamicAny.DynAnyPackage.InvalidValue; |
| import org.omg.DynamicAny.DynAnyFactoryPackage.InconsistentTypeCode; |
| |
| import com.sun.corba.se.spi.orb.ORB ; |
| import com.sun.corba.se.spi.logging.CORBALogDomains ; |
| import com.sun.corba.se.impl.logging.ORBUtilSystemException ; |
| |
| // _REVIST_ Could make this a subclass of DynArrayImpl |
| // But that would mean that an object that implements DynSequence also implements DynArray |
| // which the spec doesn't mention (it also doesn't forbid it). |
| public class DynSequenceImpl extends DynAnyCollectionImpl implements DynSequence |
| { |
| // |
| // Constructors |
| // |
| |
| private DynSequenceImpl() { |
| this(null, (Any)null, false); |
| } |
| |
| protected DynSequenceImpl(ORB orb, Any any, boolean copyValue) { |
| super(orb, any, copyValue); |
| } |
| |
| // Sets the current position to -1 and creates an empty sequence. |
| protected DynSequenceImpl(ORB orb, TypeCode typeCode) { |
| super(orb, typeCode); |
| } |
| |
| // Initializes components and anys representation |
| // from the Any representation |
| protected boolean initializeComponentsFromAny() { |
| // This typeCode is of kind tk_sequence. |
| TypeCode typeCode = any.type(); |
| int length; |
| TypeCode contentType = getContentType(); |
| InputStream input; |
| |
| try { |
| input = any.create_input_stream(); |
| } catch (BAD_OPERATION e) { |
| return false; |
| } |
| |
| length = input.read_long(); |
| components = new DynAny[length]; |
| anys = new Any[length]; |
| |
| for (int i=0; i<length; i++) { |
| // _REVISIT_ Could use read_xxx_array() methods on InputStream for efficiency |
| // but only for primitive types |
| anys[i] = DynAnyUtil.extractAnyFromStream(contentType, input, orb); |
| try { |
| // Creates the appropriate subtype without copying the Any |
| components[i] = DynAnyUtil.createMostDerivedDynAny(anys[i], orb, false); |
| } catch (InconsistentTypeCode itc) { // impossible |
| } |
| } |
| return true; |
| } |
| |
| // Sets the current position to -1 and creates an empty sequence. |
| protected boolean initializeComponentsFromTypeCode() { |
| // already done in the type code constructor |
| components = new DynAny[0]; |
| anys = new Any[0]; |
| return true; |
| } |
| |
| // Collapses the whole DynAny hierarchys values into one single streamed Any |
| protected boolean initializeAnyFromComponents() { |
| OutputStream out = any.create_output_stream(); |
| // Writing the length first is the only difference to supers implementation |
| out.write_long(components.length); |
| for (int i=0; i<components.length; i++) { |
| if (components[i] instanceof DynAnyImpl) { |
| ((DynAnyImpl)components[i]).writeAny(out); |
| } else { |
| // Not our implementation. Nothing we can do to prevent copying. |
| components[i].to_any().write_value(out); |
| } |
| } |
| any.read_value(out.create_input_stream(), any.type()); |
| return true; |
| } |
| |
| |
| // |
| // DynSequence interface methods |
| // |
| |
| // Returns the current length of the sequence |
| public int get_length() { |
| if (status == STATUS_DESTROYED) { |
| throw wrapper.dynAnyDestroyed() ; |
| } |
| return (checkInitComponents() ? components.length : 0); |
| } |
| |
| // Sets the length of the sequence. Increasing the length of a sequence |
| // adds new elements at the tail without affecting the values of already |
| // existing elements. Newly added elements are default-initialized. |
| // |
| // Increasing the length of a sequence sets the current position to the first |
| // newly-added element if the previous current position was -1. |
| // Otherwise, if the previous current position was not -1, |
| // the current position is not affected. |
| // |
| // Increasing the length of a bounded sequence to a value larger than the bound |
| // raises InvalidValue. |
| // |
| // Decreasing the length of a sequence removes elements from the tail |
| // without affecting the value of those elements that remain. |
| // The new current position after decreasing the length of a sequence is determined |
| // as follows: |
| // ?f the length of the sequence is set to zero, the current position is set to -1. |
| // ?f the current position is -1 before decreasing the length, it remains at -1. |
| // ?f the current position indicates a valid element and that element is not removed |
| // when the length is decreased, the current position remains unaffected. |
| // ?f the current position indicates a valid element and that element is removed, the |
| // current position is set to -1. |
| public void set_length(int len) |
| throws org.omg.DynamicAny.DynAnyPackage.InvalidValue |
| { |
| if (status == STATUS_DESTROYED) { |
| throw wrapper.dynAnyDestroyed() ; |
| } |
| int bound = getBound(); |
| if (bound > 0 && len > bound) { |
| throw new InvalidValue(); |
| } |
| |
| checkInitComponents(); |
| |
| int oldLength = components.length; |
| if (len > oldLength) { |
| // Increase length |
| DynAny[] newComponents = new DynAny[len]; |
| Any[] newAnys = new Any[len]; |
| System.arraycopy(components, 0, newComponents, 0, oldLength); |
| System.arraycopy(anys, 0, newAnys, 0, oldLength); |
| components = newComponents; |
| anys = newAnys; |
| |
| // Newly added elements are default-initialized |
| TypeCode contentType = getContentType(); |
| for (int i=oldLength; i<len; i++) { |
| createDefaultComponentAt(i, contentType); |
| } |
| |
| // Increasing the length of a sequence sets the current position to the first |
| // newly-added element if the previous current position was -1. |
| if (index == NO_INDEX) |
| index = oldLength; |
| } else if (len < oldLength) { |
| // Decrease length |
| DynAny[] newComponents = new DynAny[len]; |
| Any[] newAnys = new Any[len]; |
| System.arraycopy(components, 0, newComponents, 0, len); |
| System.arraycopy(anys, 0, newAnys, 0, len); |
| // It is probably right not to destroy the released component DynAnys. |
| // Some other DynAny or a user variable might still hold onto them |
| // and if not then the garbage collector will take care of it. |
| //for (int i=len; i<oldLength; i++) { |
| // components[i].destroy(); |
| //} |
| components = newComponents; |
| anys = newAnys; |
| |
| // ?f the length of the sequence is set to zero, the current position is set to -1. |
| // ?f the current position is -1 before decreasing the length, it remains at -1. |
| // ?f the current position indicates a valid element and that element is not removed |
| // when the length is decreased, the current position remains unaffected. |
| // ?f the current position indicates a valid element and that element is removed, |
| // the current position is set to -1. |
| if (len == 0 || index >= len) { |
| index = NO_INDEX; |
| } |
| } else { |
| // Length unchanged |
| // Maybe components is now default initialized from type code |
| if (index == NO_INDEX && len > 0) { |
| index = 0; |
| } |
| } |
| } |
| |
| // Initializes the elements of the sequence. |
| // The length of the DynSequence is set to the length of value. |
| // The current position is set to zero if value has non-zero length |
| // and to -1 if value is a zero-length sequence. |
| // If the length of value exceeds the bound of a bounded sequence, |
| // the operation raises InvalidValue. |
| // If value contains one or more elements whose TypeCode is not equivalent |
| // to the element TypeCode of the DynSequence, the operation raises TypeMismatch. |
| /* |
| public void set_elements(org.omg.CORBA.Any[] value) |
| throws org.omg.DynamicAny.DynAnyPackage.TypeMismatch, |
| org.omg.DynamicAny.DynAnyPackage.InvalidValue; |
| */ |
| |
| // |
| // Utility methods |
| // |
| |
| protected void checkValue(Object[] value) |
| throws org.omg.DynamicAny.DynAnyPackage.InvalidValue |
| { |
| if (value == null || value.length == 0) { |
| clearData(); |
| index = NO_INDEX; |
| return; |
| } else { |
| index = 0; |
| } |
| int bound = getBound(); |
| if (bound > 0 && value.length > bound) { |
| throw new InvalidValue(); |
| } |
| } |
| } |