/*
* Copyright (c) 1998, 2004, 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 org.omg.CORBA;
/** Enables <tt>org.omg.CORBA.Any</tt> values to be dynamically
* interpreted (traversed) and
* constructed. A <tt>DynAny</tt> object is associated with a data value
* which may correspond to a copy of the value inserted into an <tt>Any</tt>.
* The <tt>DynAny</tt> APIs enable traversal of the data value associated with an
* Any at runtime and extraction of the primitive constituents of the
* data value.
* @deprecated Use the new <a href="../DynamicAny/DynAny.html">DynAny</a> instead
*/
@Deprecated
public interface DynAny extends org.omg.CORBA.Object
{
/**
* Returns the <code>TypeCode</code> of the object inserted into
* this <code>DynAny</code>.
*
* @return the <code>TypeCode</code> object.
*/
public org.omg.CORBA.TypeCode type() ;
/**
* Copy the contents from one Dynamic Any into another.
*
* @param dyn_any the <code>DynAny</code> object whose contents
* are assigned to this <code>DynAny</code>.
* @throws Invalid if the source <code>DynAny</code> is
* invalid
*/
public void assign(org.omg.CORBA.DynAny dyn_any)
throws org.omg.CORBA.DynAnyPackage.Invalid;
/**
* Make a <code>DynAny</code> object from an <code>Any</code>
* object.
*
* @param value the <code>Any</code> object.
* @throws Invalid if the source <code>Any</code> object is
* empty or bad
*/
public void from_any(org.omg.CORBA.Any value)
throws org.omg.CORBA.DynAnyPackage.Invalid;
/**
* Convert a <code>DynAny</code> object to an <code>Any</code>
* object.
*
* @return the <code>Any</code> object.
* @throws Invalid if this <code>DynAny</code> is empty or
* bad.
* created or does not contain a meaningful value
*/
public org.omg.CORBA.Any to_any()
throws org.omg.CORBA.DynAnyPackage.Invalid;
/**
* Destroys this <code>DynAny</code> object and frees any resources
* used to represent the data value associated with it. This method
* also destroys all <code>DynAny</code> objects obtained from it.
* <p>
* Destruction of <code>DynAny</code> objects should be handled with
* care, taking into account issues dealing with the representation of
* data values associated with <code>DynAny</code> objects. A programmer
* who wants to destroy a <code>DynAny</code> object but still be able
* to manipulate some component of the data value associated with it,
* should first create a <code>DynAny</code> object for the component
* and then make a copy of the created <code>DynAny</code> object.
*/
public void destroy() ;
/**
* Clones this <code>DynAny</code> object.
*
* @return a copy of this <code>DynAny</code> object
*/
public org.omg.CORBA.DynAny copy() ;
/**
* Inserts the given <code>boolean</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>boolean</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_boolean(boolean value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>byte</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>byte</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_octet(byte value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>char</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>char</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_char(char value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>short</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>short</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_short(short value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>short</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>short</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_ushort(short value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>int</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>int</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_long(int value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>int</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>int</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_ulong(int value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>float</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>float</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_float(float value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>double</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>double</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_double(double value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>String</code> object as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>String</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_string(String value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>org.omg.CORBA.Object</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>org.omg.CORBA.Object</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_reference(org.omg.CORBA.Object value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>org.omg.CORBA.TypeCode</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>org.omg.CORBA.TypeCode</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_typecode(org.omg.CORBA.TypeCode value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>long</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>long</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_longlong(long value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>long</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>long</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_ulonglong(long value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>char</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>char</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_wchar(char value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>String</code> as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>String</code> to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_wstring(String value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Inserts the given <code>org.omg.CORBA.Any</code> object as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>org.omg.CORBA.Any</code> object to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_any(org.omg.CORBA.Any value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
// orbos 98-01-18: Objects By Value -- begin
/**
* Inserts the given <code>java.io.Serializable</code> object as the value for this
* <code>DynAny</code> object.
*
* <p> If this method is called on a constructed <code>DynAny</code>
* object, it initializes the next component of the constructed data
* value associated with this <code>DynAny</code> object.
*
* @param value the <code>java.io.Serializable</code> object to insert into this
* <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.InvalidValue
* if the value inserted is not consistent with the type
* of the accessed component in this <code>DynAny</code> object
*/
public void insert_val(java.io.Serializable value)
throws org.omg.CORBA.DynAnyPackage.InvalidValue;
/**
* Retrieves the <code>java.io.Serializable</code> object contained
* in this <code>DynAny</code> object.
*
* @return the <code>java.io.Serializable</code> object that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>java.io.Serializable</code> object
*/
public java.io.Serializable get_val()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
// orbos 98-01-18: Objects By Value -- end
/**
* Retrieves the <code>boolean</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>boolean</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>boolean</code>
*/
public boolean get_boolean()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>byte</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>byte</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>byte</code>
*/
public byte get_octet()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>char</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>char</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>char</code>
*/
public char get_char()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>short</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>short</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>short</code>
*/
public short get_short()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>short</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>short</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>short</code>
*/
public short get_ushort()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>int</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>int</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>int</code>
*/
public int get_long()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>int</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>int</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>int</code>
*/
public int get_ulong()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>float</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>float</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>float</code>
*/
public float get_float()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>double</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>double</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>double</code>
*/
public double get_double()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>String</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>String</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>String</code>
*/
public String get_string()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>org.omg.CORBA.Other</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>org.omg.CORBA.Other</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for an <code>org.omg.CORBA.Other</code>
*/
public org.omg.CORBA.Object get_reference()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>org.omg.CORBA.TypeCode</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>org.omg.CORBA.TypeCode</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>org.omg.CORBA.TypeCode</code>
*/
public org.omg.CORBA.TypeCode get_typecode()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>long</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>long</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>long</code>
*/
public long get_longlong()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>long</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>long</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>long</code>
*/
public long get_ulonglong()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>char</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>char</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>char</code>
*/
public char get_wchar()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>String</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>String</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for a <code>String</code>
*/
public String get_wstring()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Retrieves the <code>org.omg.CORBA.Any</code> contained
* in this <code>DynAny</code> object.
*
* @return the <code>org.omg.CORBA.Any</code> that is the
* value for this <code>DynAny</code> object
* @throws org.omg.CORBA.DynAnyPackage.TypeMismatch
* if the type code of the accessed component in this
* <code>DynAny</code> object is not equivalent to
* the type code for an <code>org.omg.CORBA.Any</code>
*/
public org.omg.CORBA.Any get_any()
throws org.omg.CORBA.DynAnyPackage.TypeMismatch;
/**
* Returns a <code>DynAny</code> object reference that can
* be used to get/set the value of the component currently accessed.
* The appropriate <code>insert</code> method
* can be called on the resulting <code>DynAny</code> object
* to initialize the component.
* The appropriate <code>get</code> method
* can be called on the resulting <code>DynAny</code> object
* to extract the value of the component.
*
* @return a <code>DynAny</code> object reference that can be
* used to retrieve or set the value of the component currently
* accessed
*/
public org.omg.CORBA.DynAny current_component() ;
/**
* Moves to the next component of this <code>DynAny</code> object.
* This method is used for iterating through the components of
* a constructed type, effectively moving a pointer from one
* component to the next. The pointer starts out on the first
* component when a <code>DynAny</code> object is created.
*
* @return <code>true</code> if the pointer points to a component;
* <code>false</code> if there are no more components or this
* <code>DynAny</code> is associated with a basic type rather than
* a constructed type
*/
public boolean next() ;
/**
* Moves the internal pointer to the given index. Logically, this method
* sets a new offset for this pointer.
*
* @param index an <code>int</code> indicating the position to which
* the pointer should move. The first position is 0.
* @return <code>true</code> if the pointer points to a component;
* <code>false</code> if there is no component at the designated
* index. If this <code>DynAny</code> object is associated with a
* basic type, this method returns <code>false</code> for any index
* other than 0.
*/
public boolean seek(int index) ;
/**
* Moves the internal pointer to the first component.
*/
public void rewind() ;
}