JDK 11 java.naming.jmod - Naming Module
JDK 11 java.naming.jmod is the JMOD file for JDK 11 Naming module.
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⏎ javax/naming/CompoundName.java
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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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.
* <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.
*
* <h1>Compound Name Syntax</h1>
* 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 separates 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.
*
*<h1>Multithreaded Access</h1>
* A {@code CompoundName} instance is not synchronized against concurrent
* multithreaded access. Multiple threads trying to access and modify a
* {@code CompoundName} 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.
*/
private 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.
*/
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 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.
*
* @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}.
*/
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.
*
* @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.
*<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.
*
* @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.
*
* @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.
* <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.
*
* @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.
*
* @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.
*
* @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.
*
* @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 do 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<String> 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 do 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<String> 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.
*<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 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.
*<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.
*<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.
*
* @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.
*
* @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.
*
* @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 {@code Properties}, followed by
* the number of components (an {@code int}), and the individual
* components (each a {@code String}).
*/
private void writeObject(java.io.ObjectOutputStream s)
throws java.io.IOException {
s.writeObject(mySyntax);
s.writeInt(size());
Enumeration<String> comps = getAll();
while (comps.hasMoreElements()) {
s.writeObject(comps.nextElement());
}
}
/**
* 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
*/
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();
}
}
*/
}
⏎ javax/naming/CompoundName.java
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