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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();
}
}
}