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 * Copyright (c) 1999, 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
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 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package javax.naming;

import java.util.Enumeration;
import java.util.Properties;

This class represents a compound name -- a name from
a hierarchical name space.
Each component in a compound name is an atomic name.

The components of a compound name are numbered.  The indexes of a
compound name with N components range from 0 up to, but not including, N.
This range may be written as [0,N).
The most significant component is at index 0.
An empty compound name has no components.

Compound Name Syntax
The syntax of a compound name is specified using a set of properties:

 
jndi.syntax.direction
 
Direction for parsing ("right_to_left", "left_to_right", "flat").
     If unspecified, defaults to "flat", which means the namespace is flat
     with no hierarchical structure.
 
jndi.syntax.separator
 
Separator between atomic name components.
     Required unless direction is "flat".
 
jndi.syntax.ignorecase
 
If present, "true" means ignore the case when comparing name
     components. If its value is not "true", or if the property is not
     present, case is considered when comparing name components.
 
jndi.syntax.escape
 
If present, specifies the escape string for overriding separator,
     escapes and quotes.
 
jndi.syntax.beginquote
 
If present, specifies the string delimiting start of a quoted string.
 
jndi.syntax.endquote
 
String delimiting end of quoted string.
     If present, specifies the string delimiting the end of a quoted string.
     If not present, use syntax.beginquote as end quote.
 
jndi.syntax.beginquote2
 
Alternative set of begin/end quotes.
 
jndi.syntax.endquote2
 
Alternative set of begin/end quotes.
 
jndi.syntax.trimblanks
 
If present, "true" means trim any leading and trailing whitespaces
     in a name component for comparison purposes. If its value is not
     "true", or if the property is not present, blanks are significant.
 
jndi.syntax.separator.ava
 
If present, specifies the string that separates
     attribute-value-assertions when specifying multiple attribute/value
     pairs. (e.g. ","  in age=65,gender=male).
 
jndi.syntax.separator.typeval
 
If present, specifies the string that separators attribute
             from value (e.g. "=" in "age=65")

These properties are interpreted according to the following rules:


In a string without quotes or escapes, any instance of the
separator delimits two atomic names. Each atomic name is referred
to as a component.

A separator, quote or escape is escaped if preceded immediately
(on the left) by the escape.

If there are two sets of quotes, a specific begin-quote must be matched
by its corresponding end-quote.

A non-escaped begin-quote which precedes a component must be
matched by a non-escaped end-quote at the end of the component.
A component thus quoted is referred to as a
quoted component. It is parsed by
removing the being- and end- quotes, and by treating the intervening
characters as ordinary characters unless one of the rules involving
quoted components listed below applies.

Quotes embedded in non-quoted components are treated as ordinary strings
and need not be matched.

A separator that is escaped or appears between non-escaped
quotes is treated as an ordinary string and not a separator.

An escape string within a quoted component acts as an escape only when
followed by the corresponding end-quote string.
This can be used to embed an escaped quote within a quoted component.

An escaped escape string is not treated as an escape string.

An escape string that does not precede a meta string (quotes or separator)
and is not at the end of a component is treated as an ordinary string.

A leading separator (the compound name string begins with
a separator) denotes a leading empty atomic component (consisting
of an empty string).
A trailing separator (the compound name string ends with
a separator) denotes a trailing empty atomic component.
Adjacent separators denote an empty atomic component.


The string form of the compound name follows the syntax described above.
When the components of the compound name are turned into their
string representation, the reserved syntax rules described above are
applied (e.g. embedded separators are escaped or quoted)
so that when the same string is parsed, it will yield the same components
of the original compound name.

Multithreaded Access
A CompoundName instance is not synchronized against concurrent
multithreaded access. Multiple threads trying to access and modify a
CompoundName should lock the object.
Author:
Rosanna Lee, Scott Seligman
Since:
1.3/**
 * This class represents a compound name -- a name from
 * a hierarchical name space.
 * Each component in a compound name is an atomic name.
 * <p>
 * The components of a compound name are numbered.  The indexes of a
 * compound name with N components range from 0 up to, but not including, N.
 * This range may be written as [0,N).
 * The most significant component is at index 0.
 * An empty compound name has no components.
 *<p>
 * <h4>Compound Name Syntax</h4>
 * The syntax of a compound name is specified using a set of properties:
 *<dl>
 *  <dt>jndi.syntax.direction
 *  <dd>Direction for parsing ("right_to_left", "left_to_right", "flat").
 *      If unspecified, defaults to "flat", which means the namespace is flat
 *      with no hierarchical structure.
 *
 *  <dt>jndi.syntax.separator
 *  <dd>Separator between atomic name components.
 *      Required unless direction is "flat".
 *
 *  <dt>jndi.syntax.ignorecase
 *  <dd>If present, "true" means ignore the case when comparing name
 *      components. If its value is not "true", or if the property is not
 *      present, case is considered when comparing name components.
 *
 *  <dt>jndi.syntax.escape
 *  <dd>If present, specifies the escape string for overriding separator,
 *      escapes and quotes.
 *
 *  <dt>jndi.syntax.beginquote
 *  <dd>If present, specifies the string delimiting start of a quoted string.
 *
 *  <dt>jndi.syntax.endquote
 *  <dd>String delimiting end of quoted string.
 *      If present, specifies the string delimiting the end of a quoted string.
 *      If not present, use syntax.beginquote as end quote.
 *  <dt>jndi.syntax.beginquote2
 *  <dd>Alternative set of begin/end quotes.
 *
 *  <dt>jndi.syntax.endquote2
 *  <dd>Alternative set of begin/end quotes.
 *
 *  <dt>jndi.syntax.trimblanks
 *  <dd>If present, "true" means trim any leading and trailing whitespaces
 *      in a name component for comparison purposes. If its value is not
 *      "true", or if the property is not present, blanks are significant.
 *  <dt>jndi.syntax.separator.ava
 *  <dd>If present, specifies the string that separates
 *      attribute-value-assertions when specifying multiple attribute/value
 *      pairs. (e.g. ","  in age=65,gender=male).
 *  <dt>jndi.syntax.separator.typeval
 *  <dd>If present, specifies the string that separators attribute
 *              from value (e.g. "=" in "age=65")
 *</dl>
 * These properties are interpreted according to the following rules:
 *<ol>
 *<li>
 * In a string without quotes or escapes, any instance of the
 * separator delimits two atomic names. Each atomic name is referred
 * to as a <em>component</em>.
 *<li>
 * A separator, quote or escape is escaped if preceded immediately
 * (on the left) by the escape.
 *<li>
 * If there are two sets of quotes, a specific begin-quote must be matched
 * by its corresponding end-quote.
 *<li>
 * A non-escaped begin-quote which precedes a component must be
 * matched by a non-escaped end-quote at the end of the component.
 * A component thus quoted is referred to as a
 * <em>quoted component</em>. It is parsed by
 * removing the being- and end- quotes, and by treating the intervening
 * characters as ordinary characters unless one of the rules involving
 * quoted components listed below applies.
 *<li>
 * Quotes embedded in non-quoted components are treated as ordinary strings
 * and need not be matched.
 *<li>
 * A separator that is escaped or appears between non-escaped
 * quotes is treated as an ordinary string and not a separator.
 *<li>
 * An escape string within a quoted component acts as an escape only when
 * followed by the corresponding end-quote string.
 * This can be used to embed an escaped quote within a quoted component.
 *<li>
 * An escaped escape string is not treated as an escape string.
 *<li>
 * An escape string that does not precede a meta string (quotes or separator)
 * and is not at the end of a component is treated as an ordinary string.
 *<li>
 * A leading separator (the compound name string begins with
 * a separator) denotes a leading empty atomic component (consisting
 * of an empty string).
 * A trailing separator (the compound name string ends with
 * a separator) denotes a trailing empty atomic component.
 * Adjacent separators denote an empty atomic component.
 *</ol>
 * <p>
 * The string form of the compound name follows the syntax described above.
 * When the components of the compound name are turned into their
 * string representation, the reserved syntax rules described above are
 * applied (e.g. embedded separators are escaped or quoted)
 * so that when the same string is parsed, it will yield the same components
 * of the original compound name.
 *<p>
 *<h4>Multithreaded Access</h4>
 * A <tt>CompoundName</tt> instance is not synchronized against concurrent
 * multithreaded access. Multiple threads trying to access and modify a
 * <tt>CompoundName</tt> should lock the object.
 *
 * @author Rosanna Lee
 * @author Scott Seligman
 * @since 1.3
 */

public class CompoundName implements Name {

    
Implementation of this compound name.
This field is initialized by the constructors and cannot be null.
It should be treated as a read-only variable by subclasses.
/**
      * Implementation of this compound name.
      * This field is initialized by the constructors and cannot be null.
      * It should be treated as a read-only variable by subclasses.
      */
    protected transient NameImpl impl;
    
Syntax properties for this compound name.
This field is initialized by the constructors and cannot be null.
It should be treated as a read-only variable by subclasses.
Any necessary changes to mySyntax should be made within constructors
and not after the compound name has been instantiated.
/**
      * Syntax properties for this compound name.
      * This field is initialized by the constructors and cannot be null.
      * It should be treated as a read-only variable by subclasses.
      * Any necessary changes to mySyntax should be made within constructors
      * and not after the compound name has been instantiated.
      */
    protected transient Properties mySyntax;

    
Constructs a new compound name instance using the components
specified in comps and syntax. This protected method is intended to be
to be used by subclasses of CompoundName when they override
methods such as clone(), getPrefix(), getSuffix().
Params:
comps –  A non-null enumeration of the components to add.
  Each element of the enumeration is of class String.
              The enumeration will be consumed to extract its
              elements.
syntax –   A non-null properties that specify the syntax of
                this compound name. See class description for
                contents of properties./**
      * Constructs a new compound name instance using the components
      * specified in comps and syntax. This protected method is intended to be
      * to be used by subclasses of CompoundName when they override
      * methods such as clone(), getPrefix(), getSuffix().
      *
      * @param comps  A non-null enumeration of the components to add.
      *   Each element of the enumeration is of class String.
      *               The enumeration will be consumed to extract its
      *               elements.
      * @param syntax   A non-null properties that specify the syntax of
      *                 this compound name. See class description for
      *                 contents of properties.
      */
    protected CompoundName(Enumeration<String> comps, Properties syntax) {
        if (syntax == null) {
            throw new NullPointerException();
        }
        mySyntax = syntax;
        impl = new NameImpl(syntax, comps);
    }

    
Constructs a new compound name instance by parsing the string n
using the syntax specified by the syntax properties supplied.
Params:
n –       The non-null string to parse.
syntax –   A non-null list of properties that specify the syntax of
                this compound name.  See class description for
                contents of properties.
Throws:
InvalidNameException – If 'n' violates the syntax specified
                by syntax./**
      * Constructs a new compound name instance by parsing the string n
      * using the syntax specified by the syntax properties supplied.
      *
      * @param  n       The non-null string to parse.
      * @param syntax   A non-null list of properties that specify the syntax of
      *                 this compound name.  See class description for
      *                 contents of properties.
      * @exception      InvalidNameException If 'n' violates the syntax specified
      *                 by <code>syntax</code>.
      */
    public CompoundName(String n, Properties syntax) throws InvalidNameException {
        if (syntax == null) {
            throw new NullPointerException();
        }
        mySyntax = syntax;
        impl = new NameImpl(syntax, n);
    }

    
Generates the string representation of this compound name, using
the syntax rules of the compound name. The syntax rules
are described in the class description.
An empty component is represented by an empty string.
The string representation thus generated can be passed to
the CompoundName constructor with the same syntax properties
to create a new equivalent compound name.
Returns:
A non-null string representation of this compound name./**
      * Generates the string representation of this compound name, using
      * the syntax rules of the compound name. The syntax rules
      * are described in the class description.
      * An empty component is represented by an empty string.
      *
      * The string representation thus generated can be passed to
      * the CompoundName constructor with the same syntax properties
      * to create a new equivalent compound name.
      *
      * @return A non-null string representation of this compound name.
      */
    public String toString() {
        return (impl.toString());
    }

    
Determines whether obj is syntactically equal to this compound name.
If obj is null or not a CompoundName, false is returned.
Two compound names are equal if each component in one is "equal"
to the corresponding component in the other.

Equality is also defined in terms of the syntax of this compound name.
The default implementation of CompoundName uses the syntax properties
jndi.syntax.ignorecase and jndi.syntax.trimblanks when comparing
two components for equality.  If case is ignored, two strings
with the same sequence of characters but with different cases
are considered equal. If blanks are being trimmed, leading and trailing
blanks are ignored for the purpose of the comparison.

Both compound names must have the same number of components.

Implementation note: Currently the syntax properties of the two compound
names are not compared for equality. They might be in the future.
Params:
obj –     The possibly null object to compare against.
See Also:
compareTo(Object obj)
Returns:
true if obj is equal to this compound name, false otherwise./**
      * Determines whether obj is syntactically equal to this compound name.
      * If obj is null or not a CompoundName, false is returned.
      * Two compound names are equal if each component in one is "equal"
      * to the corresponding component in the other.
      *<p>
      * Equality is also defined in terms of the syntax of this compound name.
      * The default implementation of CompoundName uses the syntax properties
      * jndi.syntax.ignorecase and jndi.syntax.trimblanks when comparing
      * two components for equality.  If case is ignored, two strings
      * with the same sequence of characters but with different cases
      * are considered equal. If blanks are being trimmed, leading and trailing
      * blanks are ignored for the purpose of the comparison.
      *<p>
      * Both compound names must have the same number of components.
      *<p>
      * Implementation note: Currently the syntax properties of the two compound
      * names are not compared for equality. They might be in the future.
      *
      * @param  obj     The possibly null object to compare against.
      * @return true if obj is equal to this compound name, false otherwise.
      * @see #compareTo(java.lang.Object obj)
      */
    public boolean equals(Object obj) {
        // %%% check syntax too?
        return (obj != null &&
                obj instanceof CompoundName &&
                impl.equals(((CompoundName)obj).impl));
    }

    
Computes the hash code of this compound name.
The hash code is the sum of the hash codes of the "canonicalized"
forms of individual components of this compound name.
Each component is "canonicalized" according to the
compound name's syntax before its hash code is computed.
For a case-insensitive name, for example, the uppercased form of
a name has the same hash code as its lowercased equivalent.
Returns:
An int representing the hash code of this name./**
      * Computes the hash code of this compound name.
      * The hash code is the sum of the hash codes of the "canonicalized"
      * forms of individual components of this compound name.
      * Each component is "canonicalized" according to the
      * compound name's syntax before its hash code is computed.
      * For a case-insensitive name, for example, the uppercased form of
      * a name has the same hash code as its lowercased equivalent.
      *
      * @return An int representing the hash code of this name.
      */
    public int hashCode() {
        return impl.hashCode();
    }

    
Creates a copy of this compound name.
Changes to the components of this compound name won't
affect the new copy and vice versa.
The clone and this compound name share the same syntax.
Returns:
A non-null copy of this compound name./**
      * Creates a copy of this compound name.
      * Changes to the components of this compound name won't
      * affect the new copy and vice versa.
      * The clone and this compound name share the same syntax.
      *
      * @return A non-null copy of this compound name.
      */
    public Object clone() {
        return (new CompoundName(getAll(), mySyntax));
    }

    
Compares this CompoundName with the specified Object for order.
Returns a
negative integer, zero, or a positive integer as this Name is less
than, equal to, or greater than the given Object.

If obj is null or not an instance of CompoundName, ClassCastException
is thrown.

See equals() for what it means for two compound names to be equal.
If two compound names are equal, 0 is returned.

Ordering of compound names depend on the syntax of the compound name.
By default, they follow lexicographical rules for string comparison
with the extension that this applies to all the components in the
compound name and that comparison of individual components is
affected by the jndi.syntax.ignorecase and jndi.syntax.trimblanks
properties, identical to how they affect equals().
If this compound name is "lexicographically" lesser than obj,
a negative number is returned.
If this compound name is "lexicographically" greater than obj,
a positive number is returned.

Implementation note: Currently the syntax properties of the two compound
names are not compared when checking order. They might be in the future.
Params:
obj –     The non-null object to compare against.
Throws:
ClassCastException – if obj is not a CompoundName.
See Also:
equals(Object)
Returns:
 a negative integer, zero, or a positive integer as this Name
         is less than, equal to, or greater than the given Object./**
     * Compares this CompoundName with the specified Object for order.
     * Returns a
     * negative integer, zero, or a positive integer as this Name is less
     * than, equal to, or greater than the given Object.
     * <p>
     * If obj is null or not an instance of CompoundName, ClassCastException
     * is thrown.
     * <p>
     * See equals() for what it means for two compound names to be equal.
     * If two compound names are equal, 0 is returned.
     *<p>
     * Ordering of compound names depend on the syntax of the compound name.
     * By default, they follow lexicographical rules for string comparison
     * with the extension that this applies to all the components in the
     * compound name and that comparison of individual components is
     * affected by the jndi.syntax.ignorecase and jndi.syntax.trimblanks
     * properties, identical to how they affect equals().
     * If this compound name is "lexicographically" lesser than obj,
     * a negative number is returned.
     * If this compound name is "lexicographically" greater than obj,
     * a positive number is returned.
     *<p>
     * Implementation note: Currently the syntax properties of the two compound
     * names are not compared when checking order. They might be in the future.
     * @param   obj     The non-null object to compare against.
     * @return  a negative integer, zero, or a positive integer as this Name
     *          is less than, equal to, or greater than the given Object.
     * @exception ClassCastException if obj is not a CompoundName.
     * @see #equals(java.lang.Object)
     */
    public int compareTo(Object obj) {
        if (!(obj instanceof CompoundName)) {
            throw new ClassCastException("Not a CompoundName");
        }
        return impl.compareTo(((CompoundName)obj).impl);
    }

    
Retrieves the number of components in this compound name.
Returns:
The nonnegative number of components in this compound name./**
      * Retrieves the number of components in this compound name.
      *
      * @return The nonnegative number of components in this compound name.
      */
    public int size() {
        return (impl.size());
    }

    
Determines whether this compound name is empty.
A compound name is empty if it has zero components.
Returns:
true if this compound name is empty, false otherwise./**
      * Determines whether this compound name is empty.
      * A compound name is empty if it has zero components.
      *
      * @return true if this compound name is empty, false otherwise.
      */
    public boolean isEmpty() {
        return (impl.isEmpty());
    }

    
Retrieves the components of this compound name as an enumeration
of strings.
The effects of updates to this compound name on this enumeration
is undefined.
Returns:
A non-null enumeration of the components of this
compound name. Each element of the enumeration is of class String./**
      * Retrieves the components of this compound name as an enumeration
      * of strings.
      * The effects of updates to this compound name on this enumeration
      * is undefined.
      *
      * @return A non-null enumeration of the components of this
      * compound name. Each element of the enumeration is of class String.
      */
    public Enumeration<String> getAll() {
        return (impl.getAll());
    }

    
Retrieves a component of this compound name.
Params:
posn –    The 0-based index of the component to retrieve.
                Must be in the range [0,size()).
Throws:
ArrayIndexOutOfBoundsException – if posn is outside the
        specified range.
Returns:
The component at index posn./**
      * Retrieves a component of this compound name.
      *
      * @param  posn    The 0-based index of the component to retrieve.
      *                 Must be in the range [0,size()).
      * @return The component at index posn.
      * @exception ArrayIndexOutOfBoundsException if posn is outside the
      *         specified range.
      */
    public String get(int posn) {
        return (impl.get(posn));
    }

    
Creates a compound name whose components consist of a prefix of the
components in this compound name.
The result and this compound name share the same syntax.
Subsequent changes to
this compound name does not affect the name that is returned and
vice versa.
Params:
posn –    The 0-based index of the component at which to stop.
                Must be in the range [0,size()].
Throws:
ArrayIndexOutOfBoundsException – 
        If posn is outside the specified range.
Returns:
A compound name consisting of the components at indexes in
        the range [0,posn)./**
      * Creates a compound name whose components consist of a prefix of the
      * components in this compound name.
      * The result and this compound name share the same syntax.
      * Subsequent changes to
      * this compound name does not affect the name that is returned and
      * vice versa.
      *
      * @param  posn    The 0-based index of the component at which to stop.
      *                 Must be in the range [0,size()].
      * @return A compound name consisting of the components at indexes in
      *         the range [0,posn).
      * @exception ArrayIndexOutOfBoundsException
      *         If posn is outside the specified range.
      */
    public Name getPrefix(int posn) {
        Enumeration comps = impl.getPrefix(posn);
        return (new CompoundName(comps, mySyntax));
    }

    
Creates a compound name whose components consist of a suffix of the
components in this compound name.
The result and this compound name share the same syntax.
Subsequent changes to
this compound name does not affect the name that is returned.
Params:
posn –    The 0-based index of the component at which to start.
                Must be in the range [0,size()].
Throws:
ArrayIndexOutOfBoundsException – 
        If posn is outside the specified range.
Returns:
A compound name consisting of the components at indexes in
        the range [posn,size()).  If posn is equal to
        size(), an empty compound name is returned./**
      * Creates a compound name whose components consist of a suffix of the
      * components in this compound name.
      * The result and this compound name share the same syntax.
      * Subsequent changes to
      * this compound name does not affect the name that is returned.
      *
      * @param  posn    The 0-based index of the component at which to start.
      *                 Must be in the range [0,size()].
      * @return A compound name consisting of the components at indexes in
      *         the range [posn,size()).  If posn is equal to
      *         size(), an empty compound name is returned.
      * @exception ArrayIndexOutOfBoundsException
      *         If posn is outside the specified range.
      */
    public Name getSuffix(int posn) {
        Enumeration comps = impl.getSuffix(posn);
        return (new CompoundName(comps, mySyntax));
    }

    
Determines whether a compound name is a prefix of this compound name.
A compound name 'n' is a prefix if it is equal to
getPrefix(n.size())--in other words, this compound name
starts with 'n'.
If n is null or not a compound name, false is returned.

Implementation note: Currently the syntax properties of n
 are not used when doing the comparison. They might be in the future.
Params:
n –       The possibly null compound name to check.
Returns:
true if n is a CompoundName and
                is a prefix of this compound name, false otherwise./**
      * Determines whether a compound name is a prefix of this compound name.
      * A compound name 'n' is a prefix if it is equal to
      * getPrefix(n.size())--in other words, this compound name
      * starts with 'n'.
      * If n is null or not a compound name, false is returned.
      *<p>
      * Implementation note: Currently the syntax properties of n
      *  are not used when doing the comparison. They might be in the future.
      * @param  n       The possibly null compound name to check.
      * @return true if n is a CompoundName and
      *                 is a prefix of this compound name, false otherwise.
      */
    public boolean startsWith(Name n) {
        if (n instanceof CompoundName) {
            return (impl.startsWith(n.size(), n.getAll()));
        } else {
            return false;
        }
    }

    
Determines whether a compound name is a suffix of this compound name.
A compound name 'n' is a suffix if it it is equal to
getSuffix(size()-n.size())--in other words, this
compound name ends with 'n'.
If n is null or not a compound name, false is returned.

Implementation note: Currently the syntax properties of n
 are not used when doing the comparison. They might be in the future.
Params:
n –       The possibly null compound name to check.
Returns:
true if n is a CompoundName and
        is a suffix of this compound name, false otherwise./**
      * Determines whether a compound name is a suffix of this compound name.
      * A compound name 'n' is a suffix if it it is equal to
      * getSuffix(size()-n.size())--in other words, this
      * compound name ends with 'n'.
      * If n is null or not a compound name, false is returned.
      *<p>
      * Implementation note: Currently the syntax properties of n
      *  are not used when doing the comparison. They might be in the future.
      * @param  n       The possibly null compound name to check.
      * @return true if n is a CompoundName and
      *         is a suffix of this compound name, false otherwise.
      */
    public boolean endsWith(Name n) {
        if (n instanceof CompoundName) {
            return (impl.endsWith(n.size(), n.getAll()));
        } else {
            return false;
        }
    }

    
Adds the components of a compound name -- in order -- to the end of
this compound name.

Implementation note: Currently the syntax properties of suffix
 is not used or checked. They might be in the future.
Params:
suffix –   The non-null components to add.
Throws:
InvalidNameException – If suffix is not a compound name,
           or if the addition of the components violates the syntax
           of this compound name (e.g. exceeding number of components).
Returns:
The updated CompoundName, not a new one. Cannot be null./**
      * Adds the components of a compound name -- in order -- to the end of
      * this compound name.
      *<p>
      * Implementation note: Currently the syntax properties of suffix
      *  is not used or checked. They might be in the future.
      * @param suffix   The non-null components to add.
      * @return The updated CompoundName, not a new one. Cannot be null.
      * @exception InvalidNameException If suffix is not a compound name,
      *            or if the addition of the components violates the syntax
      *            of this compound name (e.g. exceeding number of components).
      */
    public Name addAll(Name suffix) throws InvalidNameException {
        if (suffix instanceof CompoundName) {
            impl.addAll(suffix.getAll());
            return this;
        } else {
            throw new InvalidNameException("Not a compound name: " +
                suffix.toString());
        }
    }

    
Adds the components of a compound name -- in order -- at a specified
position within this compound name.
Components of this compound name at or after the index of the first
new component are shifted up (away from index 0)
to accommodate the new components.

Implementation note: Currently the syntax properties of suffix
 is not used or checked. They might be in the future.
Params:
n –        The non-null components to add.
posn –     The index in this name at which to add the new
                components.  Must be in the range [0,size()].
Throws:
ArrayIndexOutOfBoundsException – 
        If posn is outside the specified range.
InvalidNameException – If n is not a compound name,
           or if the addition of the components violates the syntax
           of this compound name (e.g. exceeding number of components).
Returns:
The updated CompoundName, not a new one. Cannot be null./**
      * Adds the components of a compound name -- in order -- at a specified
      * position within this compound name.
      * Components of this compound name at or after the index of the first
      * new component are shifted up (away from index 0)
      * to accommodate the new components.
      *<p>
      * Implementation note: Currently the syntax properties of suffix
      *  is not used or checked. They might be in the future.
      *
      * @param n        The non-null components to add.
      * @param posn     The index in this name at which to add the new
      *                 components.  Must be in the range [0,size()].
      * @return The updated CompoundName, not a new one. Cannot be null.
      * @exception ArrayIndexOutOfBoundsException
      *         If posn is outside the specified range.
      * @exception InvalidNameException If n is not a compound name,
      *            or if the addition of the components violates the syntax
      *            of this compound name (e.g. exceeding number of components).
      */
    public Name addAll(int posn, Name n) throws InvalidNameException {
        if (n instanceof CompoundName) {
            impl.addAll(posn, n.getAll());
            return this;
        } else {
            throw new InvalidNameException("Not a compound name: " +
                n.toString());
        }
    }

    
Adds a single component to the end of this compound name.
Params:
comp –     The non-null component to add.
Throws:
InvalidNameException – If adding comp at end of the name
                        would violate the compound name's syntax.
Returns:
The updated CompoundName, not a new one. Cannot be null./**
      * Adds a single component to the end of this compound name.
      *
      * @param comp     The non-null component to add.
      * @return The updated CompoundName, not a new one. Cannot be null.
      * @exception InvalidNameException If adding comp at end of the name
      *                         would violate the compound name's syntax.
      */
    public Name add(String comp) throws InvalidNameException{
        impl.add(comp);
        return this;
    }

    
Adds a single component at a specified position within this
compound name.
Components of this compound name at or after the index of the new
component are shifted up by one (away from index 0)
to accommodate the new component.
Params:
comp –    The non-null component to add.
posn –    The index at which to add the new component.
                Must be in the range [0,size()].
Throws:
ArrayIndexOutOfBoundsException – 
        If posn is outside the specified range.
InvalidNameException – If adding comp at the specified position
                        would violate the compound name's syntax.
Returns:
The updated CompoundName, not a new one. Cannot be null./**
      * Adds a single component at a specified position within this
      * compound name.
      * Components of this compound name at or after the index of the new
      * component are shifted up by one (away from index 0)
      * to accommodate the new component.
      *
      * @param  comp    The non-null component to add.
      * @param  posn    The index at which to add the new component.
      *                 Must be in the range [0,size()].
      * @exception ArrayIndexOutOfBoundsException
      *         If posn is outside the specified range.
      * @return The updated CompoundName, not a new one. Cannot be null.
      * @exception InvalidNameException If adding comp at the specified position
      *                         would violate the compound name's syntax.
      */
    public Name add(int posn, String comp) throws InvalidNameException{
        impl.add(posn, comp);
        return this;
    }

    
Deletes a component from this compound name.
The component of this compound name at position 'posn' is removed,
and components at indices greater than 'posn'
are shifted down (towards index 0) by one.
Params:
posn –    The index of the component to delete.
                Must be in the range [0,size()).
Throws:
ArrayIndexOutOfBoundsException – 
        If posn is outside the specified range (includes case where
        compound name is empty).
InvalidNameException – If deleting the component
                        would violate the compound name's syntax.
Returns:
The component removed (a String)./**
      * Deletes a component from this compound name.
      * The component of this compound name at position 'posn' is removed,
      * and components at indices greater than 'posn'
      * are shifted down (towards index 0) by one.
      *
      * @param  posn    The index of the component to delete.
      *                 Must be in the range [0,size()).
      * @return The component removed (a String).
      * @exception ArrayIndexOutOfBoundsException
      *         If posn is outside the specified range (includes case where
      *         compound name is empty).
      * @exception InvalidNameException If deleting the component
      *                         would violate the compound name's syntax.
      */
    public Object remove(int posn) throws InvalidNameException {
        return impl.remove(posn);
    }

    
Overridden to avoid implementation dependency.
@serialData
The syntax Properties, followed by
the number of components (an int), and the individual
components (each a String)./**
     * Overridden to avoid implementation dependency.
     * @serialData The syntax <tt>Properties</tt>, followed by
     * the number of components (an <tt>int</tt>), and the individual
     * components (each a <tt>String</tt>).
     */
    private void writeObject(java.io.ObjectOutputStream s)
            throws java.io.IOException {
        s.writeObject(mySyntax);
        s.writeInt(size());
        Enumeration comps = getAll();
        while (comps.hasMoreElements()) {
            s.writeObject(comps.nextElement());
        }
    }

    
Overridden to avoid implementation dependency.
/**
     * Overridden to avoid implementation dependency.
     */
    private void readObject(java.io.ObjectInputStream s)
            throws java.io.IOException, ClassNotFoundException {
        mySyntax = (Properties)s.readObject();
        impl = new NameImpl(mySyntax);
        int n = s.readInt();    // number of components
        try {
            while (--n >= 0) {
                add((String)s.readObject());
            }
        } catch (InvalidNameException e) {
            throw (new java.io.StreamCorruptedException("Invalid name"));
        }
    }

    
Use serialVersionUID from JNDI 1.1.1 for interoperability
/**
     * Use serialVersionUID from JNDI 1.1.1 for interoperability
     */
    private static final long serialVersionUID = 3513100557083972036L;

/*
//   For testing

    public static void main(String[] args) {
        Properties dotSyntax = new Properties();
        dotSyntax.put("jndi.syntax.direction", "right_to_left");
        dotSyntax.put("jndi.syntax.separator", ".");
        dotSyntax.put("jndi.syntax.ignorecase", "true");
        dotSyntax.put("jndi.syntax.escape", "\\");
//      dotSyntax.put("jndi.syntax.beginquote", "\"");
//      dotSyntax.put("jndi.syntax.beginquote2", "'");

        Name first = null;
        try {
            for (int i = 0; i < args.length; i++) {
                Name name;
                Enumeration e;
                System.out.println("Given name: " + args[i]);
                name = new CompoundName(args[i], dotSyntax);
                if (first == null) {
                    first = name;
                }
                e = name.getComponents();
                while (e.hasMoreElements()) {
                    System.out.println("Element: " + e.nextElement());
                }
                System.out.println("Constructed name: " + name.toString());

                System.out.println("Compare " + first.toString() + " with "
                    + name.toString() + " = " + first.compareTo(name));
            }
        } catch (Exception ne) {
            ne.printStackTrace();
        }
    }
*/
}