Java Code Examples for java.io.ObjectOutputStream#writeFields()

/**
 * @serialData Default fields.
 */
/*
 * Writes the contents of the permsMap field out as a Hashtable for
 * serialization compatibility with earlier releases. allPermission
 * unchanged.
 */
private void writeObject(ObjectOutputStream out) throws IOException {
    // Don't call out.defaultWriteObject()

    // Copy perms into a Hashtable
    Hashtable<Class<?>, PermissionCollection> perms =
        new Hashtable<>(permsMap.size()*2); // no sync; estimate
    synchronized (this) {
        perms.putAll(permsMap);
    }

    // Write out serializable fields
    ObjectOutputStream.PutField pfields = out.putFields();

    pfields.put("allPermission", allPermission); // no sync; staleness OK
    pfields.put("perms", perms);
    out.writeFields();
}
 

/**
     * Save the {@code BigInteger} instance to a stream.
     * The magnitude of a BigInteger is serialized as a byte array for
     * historical reasons.
     *
     * @serialData two necessary fields are written as well as obsolete
     *             fields for compatibility with older versions.
     */
    private void writeObject(ObjectOutputStream s) throws IOException {
        // set the values of the Serializable fields
        ObjectOutputStream.PutField fields = s.putFields();
        fields.put("signum", signum);
        fields.put("magnitude", magSerializedForm());
        // The values written for cached fields are compatible with older
        // versions, but are ignored in readObject so don't otherwise matter.
        fields.put("bitCount", -1);
        fields.put("bitLength", -1);
        fields.put("lowestSetBit", -2);
        fields.put("firstNonzeroByteNum", -2);

        // save them
        s.writeFields();
}
 

/**
 * @serialData Default fields.
 */
/*
 * Writes the contents of the permsMap field out as a Hashtable for
 * serialization compatibility with earlier releases. allPermission
 * unchanged.
 */
private void writeObject(ObjectOutputStream out) throws IOException {
    // Don't call out.defaultWriteObject()

    // Copy perms into a Hashtable
    Hashtable<Class<?>, PermissionCollection> perms =
        new Hashtable<>(permsMap.size()*2); // no sync; estimate
    synchronized (this) {
        perms.putAll(permsMap);
    }

    // Write out serializable fields
    ObjectOutputStream.PutField pfields = out.putFields();

    pfields.put("allPermission", allPermission); // no sync; staleness OK
    pfields.put("perms", perms);
    out.writeFields();
}
 

/**
 * Serializes a {@link RelationNotification} to an {@link ObjectOutputStream}.
 */
private void writeObject(ObjectOutputStream out)
        throws IOException {
  if (compat)
  {
    // Serializes this instance in the old serial form
    //
    ObjectOutputStream.PutField fields = out.putFields();
    fields.put("myNewRoleValue", newRoleValue);
    fields.put("myOldRoleValue", oldRoleValue);
    fields.put("myRelId", relationId);
    fields.put("myRelObjName", relationObjName);
    fields.put("myRelTypeName", relationTypeName);
    fields.put("myRoleName",roleName);
    fields.put("myUnregMBeanList", unregisterMBeanList);
    out.writeFields();
  }
  else
  {
    // Serializes this instance in the new serial form
    //
    out.defaultWriteObject();
  }
}
 

/**
 * Serializes a {@link RelationTypeSupport} to an {@link ObjectOutputStream}.
 */
private void writeObject(ObjectOutputStream out)
        throws IOException {
  if (compat)
  {
    // Serializes this instance in the old serial form
    //
    ObjectOutputStream.PutField fields = out.putFields();
    fields.put("myTypeName", typeName);
    fields.put("myRoleName2InfoMap", roleName2InfoMap);
    fields.put("myIsInRelServFlg", isInRelationService);
    out.writeFields();
  }
  else
  {
    // Serializes this instance in the new serial form
    //
    out.defaultWriteObject();
  }
}
 

/**
 * Serializes a {@link NumericValueExp} to an {@link ObjectOutputStream}.
 */
private void writeObject(ObjectOutputStream out)
        throws IOException {
  if (compat)
  {
    // Serializes this instance in the old serial form
    //
    ObjectOutputStream.PutField fields = out.putFields();
    fields.put("doubleVal", doubleValue());
    fields.put("longVal", longValue());
    fields.put("valIsLong", isLong());
    out.writeFields();
  }
  else
  {
    // Serializes this instance in the new serial form
    //
    out.defaultWriteObject();
  }
}
 

/**
 * @serialData Serialized fields. Convert Maps to Hashtables and Lists
 * to Vectors for backward compatibility.
 */
private void writeObject(ObjectOutputStream out) throws IOException {
    // Convert Maps to Hashtables, Lists to Vectors
    Vector<NodeIterator> it = (iterators == null)? null : new Vector<>(iterators);
    Vector<Range> r = (ranges == null)? null : new Vector<>(ranges);

    Hashtable<NodeImpl, Vector<LEntry>> el = null;
    if (eventListeners != null) {
        el = new Hashtable<>();
        for (Map.Entry<NodeImpl, List<LEntry>> e : eventListeners.entrySet()) {
             el.put(e.getKey(), new Vector<>(e.getValue()));
        }
    }

    // Write serialized fields
    ObjectOutputStream.PutField pf = out.putFields();
    pf.put("iterators", it);
    pf.put("ranges", r);
    pf.put("eventListeners", el);
    pf.put("mutationEvents", mutationEvents);
    out.writeFields();
}
 

/**
 * Serializes a {@link RoleUnresolved} to an {@link ObjectOutputStream}.
 */
private void writeObject(ObjectOutputStream out)
        throws IOException {
  if (compat)
  {
    // Serializes this instance in the old serial form
    //
    ObjectOutputStream.PutField fields = out.putFields();
    fields.put("myRoleName", roleName);
    fields.put("myRoleValue", roleValue);
    fields.put("myPbType", problemType);
    out.writeFields();
  }
  else
  {
    // Serializes this instance in the new serial form
    //
    out.defaultWriteObject();
  }
}
 

/**
 * Serializes a {@link Role} to an {@link ObjectOutputStream}.
 */
private void writeObject(ObjectOutputStream out)
        throws IOException {
  if (compat)
  {
    // Serializes this instance in the old serial form
    //
    ObjectOutputStream.PutField fields = out.putFields();
    fields.put("myName", name);
    fields.put("myObjNameList", objectNameList);
    out.writeFields();
  }
  else
  {
    // Serializes this instance in the new serial form
    //
    out.defaultWriteObject();
  }
}
 

/**
 * @serialData "permissions" field (a Vector containing the ServicePermissions).
 */
/*
 * Writes the contents of the perms field out as a Vector for
 * serialization compatibility with earlier releases.
 */
private void writeObject(ObjectOutputStream out) throws IOException {
    // Don't call out.defaultWriteObject()

    // Write out Vector
    Vector<Permission> permissions = new Vector<>(perms.size());

    synchronized (this) {
        permissions.addAll(perms);
    }

    ObjectOutputStream.PutField pfields = out.putFields();
    pfields.put("permissions", permissions);
    out.writeFields();
}
 

/**
 * Serializes a {@link Notification} to an {@link ObjectOutputStream}.
 */
private void writeObject(ObjectOutputStream out)
        throws IOException {
    if (compat) {
        // Serializes this instance in the old serial form
        //
        ObjectOutputStream.PutField fields = out.putFields();
        fields.put("type", type);
        fields.put("sequenceNumber", sequenceNumber);
        fields.put("timeStamp", timeStamp);
        fields.put("userData", userData);
        fields.put("message", message);
        fields.put("source", source);
        out.writeFields();
    } else {
        // Serializes this instance in the new serial form
        //
        out.defaultWriteObject();
    }
}
 

/**
 * @serialData Null terminated list of <code>VetoableChangeListeners</code>.
 * <p>
 * At serialization time we skip non-serializable listeners and
 * only serialize the serializable listeners.
 */
private void writeObject(ObjectOutputStream s) throws IOException {
    Hashtable<String, VetoableChangeSupport> children = null;
    VetoableChangeListener[] listeners = null;
    synchronized (this.map) {
        for (Entry<String, VetoableChangeListener[]> entry : this.map.getEntries()) {
            String property = entry.getKey();
            if (property == null) {
                listeners = entry.getValue();
            } else {
                if (children == null) {
                    children = new Hashtable<>();
                }
                VetoableChangeSupport vcs = new VetoableChangeSupport(this.source);
                vcs.map.set(null, entry.getValue());
                children.put(property, vcs);
            }
        }
    }
    ObjectOutputStream.PutField fields = s.putFields();
    fields.put("children", children);
    fields.put("source", this.source);
    fields.put("vetoableChangeSupportSerializedDataVersion", 2);
    s.writeFields();

    if (listeners != null) {
        for (VetoableChangeListener l : listeners) {
            if (l instanceof Serializable) {
                s.writeObject(l);
            }
        }
    }
    s.writeObject(null);
}
 

private void writeObject(ObjectOutputStream s) throws IOException {
    Hashtable<String,PermissionCollection> permTable =
            new Hashtable<>(perms);
    ObjectOutputStream.PutField fields = s.putFields();
    fields.put("perms", permTable);
    s.writeFields();
}
 

private synchronized void writeObject(ObjectOutputStream out) throws IOException {
	Hashtable<String, PackagePermission> hashtable = new Hashtable<String, PackagePermission>(permissions);
	ObjectOutputStream.PutField pfields = out.putFields();
	pfields.put("permissions", hashtable);
	pfields.put("all_allowed", all_allowed);
	pfields.put("filterPermissions", filterPermissions);
	out.writeFields();
}
 

/**
 * @serialData Serialized fields. Convert Maps to Hashtables for backward
 * compatibility.
 */
private void writeObject(ObjectOutputStream out) throws IOException {
    // Convert Maps to Hashtables
    Hashtable<Node, Hashtable<String, UserDataRecord>> nud = null;
    if (nodeUserData != null) {
        nud = new Hashtable<>();
        for (Map.Entry<Node, Map<String, UserDataRecord>> e : nodeUserData.entrySet()) {
            //e.getValue() will not be null since an entry is always put with a non-null value
            nud.put(e.getKey(), new Hashtable<>(e.getValue()));
        }
    }

    Hashtable<String, Node> ids = (identifiers == null)? null : new Hashtable<>(identifiers);
    Hashtable<Node, Integer> nt = (nodeTable == null)? null : new Hashtable<>(nodeTable);

    // Write serialized fields
    ObjectOutputStream.PutField pf = out.putFields();
    pf.put("docType", docType);
    pf.put("docElement", docElement);
    pf.put("fFreeNLCache", fFreeNLCache);
    pf.put("encoding", encoding);
    pf.put("actualEncoding", actualEncoding);
    pf.put("version", version);
    pf.put("standalone", standalone);
    pf.put("fDocumentURI", fDocumentURI);

    //userData is the original name. It has been changed to nodeUserData, refer to the corrsponding @serialField
    pf.put("userData", nud);
    pf.put("identifiers", ids);
    pf.put("changes", changes);
    pf.put("allowGrammarAccess", allowGrammarAccess);
    pf.put("errorChecking", errorChecking);
    pf.put("ancestorChecking", ancestorChecking);
    pf.put("xmlVersionChanged", xmlVersionChanged);
    pf.put("documentNumber", documentNumber);
    pf.put("nodeCounter", nodeCounter);
    pf.put("nodeTable", nt);
    pf.put("xml11Version", xml11Version);
    out.writeFields();
}
 

/**
 * Serializes an {@link ObjectName} to an {@link ObjectOutputStream}.
 * @serialData <ul>
 *               <li>In the current serial form (value of property
 *                   <code>jmx.serial.form</code> differs from
 *                   <code>1.0</code>): the string
 *                   &quot;&lt;domain&gt;:&lt;properties&gt;&lt;wild&gt;&quot;,
 *                   where: <ul>
 *                            <li>&lt;domain&gt; represents the domain part
 *                                of the {@link ObjectName}</li>
 *                            <li>&lt;properties&gt; represents the list of
 *                                properties, as returned by
 *                                {@link #getKeyPropertyListString}
 *                            <li>&lt;wild&gt; is empty if not
 *                                <code>isPropertyPattern</code>, or
 *                                is the character "<code>*</code>" if
 *                                this <code>isPropertyPattern</code>
 *                                and &lt;properties&gt; is empty, or
 *                                is "<code>,*</code>" if
 *                                <code>isPropertyPattern</code> and
 *                                &lt;properties&gt; is not empty.
 *                            </li>
 *                          </ul>
 *                   The intent is that this string could be supplied
 *                   to the {@link #ObjectName(String)} constructor to
 *                   produce an equivalent {@link ObjectName}.
 *               </li>
 *               <li>In the old serial form (value of property
 *                   <code>jmx.serial.form</code> is
 *                   <code>1.0</code>): &lt;domain&gt; &lt;propertyList&gt;
 *                   &lt;propertyListString&gt; &lt;canonicalName&gt;
 *                   &lt;pattern&gt; &lt;propertyPattern&gt;,
 *                   where: <ul>
 *                            <li>&lt;domain&gt; represents the domain part
 *                                of the {@link ObjectName}</li>
 *                            <li>&lt;propertyList&gt; is the
 *                                {@link Hashtable} that contains all the
 *                                pairs (key,value) for this
 *                                {@link ObjectName}</li>
 *                            <li>&lt;propertyListString&gt; is the
 *                                {@link String} representation of the
 *                                list of properties in any order (not
 *                                mandatorily a canonical representation)
 *                                </li>
 *                            <li>&lt;canonicalName&gt; is the
 *                                {@link String} containing this
 *                                {@link ObjectName}'s canonical name</li>
 *                            <li>&lt;pattern&gt; is a boolean which is
 *                                <code>true</code> if this
 *                                {@link ObjectName} contains a pattern</li>
 *                            <li>&lt;propertyPattern&gt; is a boolean which
 *                                is <code>true</code> if this
 *                                {@link ObjectName} contains a pattern in
 *                                the list of properties</li>
 *                          </ul>
 *               </li>
 *             </ul>
 */
private void writeObject(ObjectOutputStream out)
        throws IOException {

  if (compat)
  {
    // Serializes this instance in the old serial form
    // Read CR 6441274 before making any changes to this code
    ObjectOutputStream.PutField fields = out.putFields();
    fields.put("domain", _canonicalName.substring(0, _domain_length));
    fields.put("propertyList", getKeyPropertyList());
    fields.put("propertyListString", getKeyPropertyListString());
    fields.put("canonicalName", _canonicalName);
    fields.put("pattern", (_domain_pattern || _property_list_pattern));
    fields.put("propertyPattern", _property_list_pattern);
    out.writeFields();
  }
  else
  {
    // Serializes this instance in the new serial form
    //
    out.defaultWriteObject();
    out.writeObject(getSerializedNameString());
  }
}
 

private void writeObject(ObjectOutputStream oos) throws IOException {
    putField = oos.putFields();
    // Do not put anything into putField so that the get methods
    // will have to use default values.
    oos.writeFields();
}
 

/**
 * Serializes a {@link DescriptorSupport} to an {@link ObjectOutputStream}.
 */
/* If you set jmx.serial.form to "1.2.0" or "1.2.1", then we are
   bug-compatible with those versions.  Specifically, field names
   are forced to lower-case before being written.  This
   contradicts the spec, which, though it does not mention
   serialization explicitly, does say that the case of field names
   is preserved.  But in 1.2.0 and 1.2.1, this requirement was not
   met.  Instead, field names in the descriptor map were forced to
   lower case.  Those versions expect this to have happened to a
   descriptor they deserialize and e.g. getFieldValue will not
   find a field whose name is spelt with a different case.
*/
private void writeObject(ObjectOutputStream out) throws IOException {
    ObjectOutputStream.PutField fields = out.putFields();
    boolean compat = "1.0".equals(serialForm);
    if (compat)
        fields.put("currClass", currClass);

    /* Purge the field "targetObject" from the DescriptorSupport before
     * serializing since the referenced object is typically not
     * serializable.  We do this here rather than purging the "descriptor"
     * variable below because that HashMap doesn't do case-insensitivity.
     * See CR 6332962.
     */
    SortedMap<String, Object> startMap = descriptorMap;
    if (startMap.containsKey("targetObject")) {
        startMap = new TreeMap<String, Object>(descriptorMap);
        startMap.remove("targetObject");
    }

    final HashMap<String, Object> descriptor;
    if (compat || "1.2.0".equals(serialForm) ||
            "1.2.1".equals(serialForm)) {
        descriptor = new HashMap<String, Object>();
        for (Map.Entry<String, Object> entry : startMap.entrySet())
            descriptor.put(entry.getKey().toLowerCase(), entry.getValue());
    } else
        descriptor = new HashMap<String, Object>(startMap);

    fields.put("descriptor", descriptor);
    out.writeFields();
}
 

/**
 * Serializes a {@link DescriptorSupport} to an {@link ObjectOutputStream}.
 */
/* If you set jmx.serial.form to "1.2.0" or "1.2.1", then we are
   bug-compatible with those versions.  Specifically, field names
   are forced to lower-case before being written.  This
   contradicts the spec, which, though it does not mention
   serialization explicitly, does say that the case of field names
   is preserved.  But in 1.2.0 and 1.2.1, this requirement was not
   met.  Instead, field names in the descriptor map were forced to
   lower case.  Those versions expect this to have happened to a
   descriptor they deserialize and e.g. getFieldValue will not
   find a field whose name is spelt with a different case.
*/
private void writeObject(ObjectOutputStream out) throws IOException {
    ObjectOutputStream.PutField fields = out.putFields();
    boolean compat = "1.0".equals(serialForm);
    if (compat)
        fields.put("currClass", currClass);

    /* Purge the field "targetObject" from the DescriptorSupport before
     * serializing since the referenced object is typically not
     * serializable.  We do this here rather than purging the "descriptor"
     * variable below because that HashMap doesn't do case-insensitivity.
     * See CR 6332962.
     */
    SortedMap<String, Object> startMap = descriptorMap;
    if (startMap.containsKey("targetObject")) {
        startMap = new TreeMap<String, Object>(descriptorMap);
        startMap.remove("targetObject");
    }

    final HashMap<String, Object> descriptor;
    if (compat || "1.2.0".equals(serialForm) ||
            "1.2.1".equals(serialForm)) {
        descriptor = new HashMap<String, Object>();
        for (Map.Entry<String, Object> entry : startMap.entrySet())
            descriptor.put(entry.getKey().toLowerCase(), entry.getValue());
    } else
        descriptor = new HashMap<String, Object>(startMap);

    fields.put("descriptor", descriptor);
    out.writeFields();
}
 

/**
 * Writes "cause" field to the stream.
 * The cause is got from the parent class.
 *
 * @param out stream used for serialization.
 * @throws IOException thrown by <code>ObjectOutputStream</code>
 *
 */
private void writeObject(ObjectOutputStream out)
        throws IOException
{
    ObjectOutputStream.PutField fields = out.putFields();
    fields.put("cause", (Throwable) super.getCause());
    out.writeFields();
}