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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* accompanied this code).
*
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package javax.naming;
import java.util.Enumeration;
/**
* The {@code Name} interface represents a generic name -- an ordered
* sequence of components. It can be a composite name (names that
* span multiple namespaces), or a compound name (names that are
* used within individual hierarchical naming systems).
*
* <p> There can be different implementations of {@code Name}; for example,
* composite names, URLs, or namespace-specific compound names.
*
* <p> The components of a name are numbered. The indexes of a 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 name has no components.
*
* <p> None of the methods in this interface accept null as a valid
* value for a parameter that is a name or a name component.
* Likewise, methods that return a name or name component never return null.
*
* <p> An instance of a {@code Name} may not be synchronized against
* concurrent multithreaded access if that access is not read-only.
*
* @author Rosanna Lee
* @author Scott Seligman
* @author R. Vasudevan
* @since 1.3
*/
public interface Name
extends Cloneable, java.io.Serializable, Comparable<Object>
{
/**
* The class fingerprint that is set to indicate
* serialization compatibility with a previous
* version of the class.
*
* @deprecated A {@code serialVersionUID} field in an interface is
* ineffectual. Do not use; no replacement.
*/
@Deprecated
@SuppressWarnings("serial")
static final long serialVersionUID = -3617482732056931635L;
/**
* Generates a new copy of this name.
* Subsequent changes to the components of this name will not
* affect the new copy, and vice versa.
*
* @return a copy of this name
*
* @see Object#clone()
*/
public Object clone();
/**
* Compares this name with another name for order.
* Returns a negative integer, zero, or a positive integer as this
* name is less than, equal to, or greater than the given name.
*
* <p> As with {@code Object.equals()}, the notion of ordering for names
* depends on the class that implements this interface.
* For example, the ordering may be
* based on lexicographical ordering of the name components.
* Specific attributes of the name, such as how it treats case,
* may affect the ordering. In general, two names of different
* classes may not be compared.
*
* @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 name
* @throws ClassCastException if obj is not a {@code Name} of a
* type that may be compared with this name
*
* @see Comparable#compareTo(Object)
*/
public int compareTo(Object obj);
/**
* Returns the number of components in this name.
*
* @return the number of components in this name
*/
public int size();
/**
* Determines whether this name is empty.
* An empty name is one with zero components.
*
* @return true if this name is empty, false otherwise
*/
public boolean isEmpty();
/**
* Retrieves the components of this name as an enumeration
* of strings. The effect on the enumeration of updates to
* this name is undefined. If the name has zero components,
* an empty (non-null) enumeration is returned.
*
* @return an enumeration of the components of this name, each a string
*/
public Enumeration<String> getAll();
/**
* Retrieves a component of this 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
* @throws ArrayIndexOutOfBoundsException
* if posn is outside the specified range
*/
public String get(int posn);
/**
* Creates a name whose components consist of a prefix of the
* components of this name. Subsequent changes to
* this name will 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 name consisting of the components at indexes in
* the range [0,posn).
* @throws ArrayIndexOutOfBoundsException
* if posn is outside the specified range
*/
public Name getPrefix(int posn);
/**
* Creates a name whose components consist of a suffix of the
* components in this name. Subsequent changes to
* this name do not affect the name that is returned and vice versa.
*
* @param posn
* the 0-based index of the component at which to start.
* Must be in the range [0,size()].
* @return a name consisting of the components at indexes in
* the range [posn,size()). If posn is equal to
* size(), an empty name is returned.
* @throws ArrayIndexOutOfBoundsException
* if posn is outside the specified range
*/
public Name getSuffix(int posn);
/**
* Determines whether this name starts with a specified prefix.
* A name {@code n} is a prefix if it is equal to
* {@code getPrefix(n.size())}.
*
* @param n
* the name to check
* @return true if {@code n} is a prefix of this name, false otherwise
*/
public boolean startsWith(Name n);
/**
* Determines whether this name ends with a specified suffix.
* A name {@code n} is a suffix if it is equal to
* {@code getSuffix(size()-n.size())}.
*
* @param n
* the name to check
* @return true if {@code n} is a suffix of this name, false otherwise
*/
public boolean endsWith(Name n);
/**
* Adds the components of a name -- in order -- to the end of this name.
*
* @param suffix
* the components to add
* @return the updated name (not a new one)
*
* @throws InvalidNameException if {@code suffix} is not a valid name,
* or if the addition of the components would violate the syntax
* rules of this name
*/
public Name addAll(Name suffix) throws InvalidNameException;
/**
* Adds the components of a name -- in order -- at a specified position
* within this name.
* Components of this name at or after the index of the first new
* component are shifted up (away from 0) to accommodate the new
* components.
*
* @param n
* the 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 name (not a new one)
*
* @throws ArrayIndexOutOfBoundsException
* if posn is outside the specified range
* @throws InvalidNameException if {@code n} is not a valid name,
* or if the addition of the components would violate the syntax
* rules of this name
*/
public Name addAll(int posn, Name n) throws InvalidNameException;
/**
* Adds a single component to the end of this name.
*
* @param comp
* the component to add
* @return the updated name (not a new one)
*
* @throws InvalidNameException if adding {@code comp} would violate
* the syntax rules of this name
*/
public Name add(String comp) throws InvalidNameException;
/**
* Adds a single component at a specified position within this name.
* Components of this 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 component to add
* @param posn
* the index at which to add the new component.
* Must be in the range [0,size()].
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