| /* |
| * 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 |
| * 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 javax.naming.directory; |
| |
| import java.util.Vector; |
| import java.util.Enumeration; |
| import java.util.NoSuchElementException; |
| |
| import javax.naming.NamingException; |
| import javax.naming.NamingEnumeration; |
| import javax.naming.OperationNotSupportedException; |
| |
| /** |
| * This interface represents an attribute associated with a named object. |
| *<p> |
| * In a directory, named objects can have associated with them |
| * attributes. The <tt>Attribute</tt> interface represents an attribute associated |
| * with a named object. An attribute contains 0 or more, possibly null, values. |
| * The attribute values can be ordered or unordered (see <tt>isOrdered()</tt>). |
| * If the values are unordered, no duplicates are allowed. |
| * If the values are ordered, duplicates are allowed. |
| *<p> |
| * The content and representation of an attribute and its values is defined by |
| * the attribute's <em>schema</em>. The schema contains information |
| * about the attribute's syntax and other properties about the attribute. |
| * See <tt>getAttributeDefinition()</tt> and |
| * <tt>getAttributeSyntaxDefinition()</tt> |
| * for details regarding how to get schema information about an attribute |
| * if the underlying directory service supports schemas. |
| *<p> |
| * Equality of two attributes is determined by the implementation class. |
| * A simple implementation can use <tt>Object.equals()</tt> to determine equality |
| * of attribute values, while a more sophisticated implementation might |
| * make use of schema information to determine equality. |
| * Similarly, one implementation might provide a static storage |
| * structure which simply returns the values passed to its |
| * constructor, while another implementation might define <tt>get()</tt> and |
| * <tt>getAll()</tt>. |
| * to get the values dynamically from the directory. |
| *<p> |
| * Note that updates to <tt>Attribute</tt> (such as adding or removing a |
| * value) do not affect the corresponding representation of the attribute |
| * in the directory. Updates to the directory can only be effected |
| * using operations in the <tt>DirContext</tt> interface. |
| * |
| * @author Rosanna Lee |
| * @author Scott Seligman |
| * |
| * @see BasicAttribute |
| * @since 1.3 |
| */ |
| public interface Attribute extends Cloneable, java.io.Serializable { |
| /** |
| * Retrieves an enumeration of the attribute's values. |
| * The behaviour of this enumeration is unspecified |
| * if the attribute's values are added, changed, |
| * or removed while the enumeration is in progress. |
| * If the attribute values are ordered, the enumeration's items |
| * will be ordered. |
| * |
| * @return A non-null enumeration of the attribute's values. |
| * Each element of the enumeration is a possibly null Object. The object's |
| * class is the class of the attribute value. The element is null |
| * if the attribute's value is null. |
| * If the attribute has zero values, an empty enumeration |
| * is returned. |
| * @exception NamingException |
| * If a naming exception was encountered while retrieving |
| * the values. |
| * @see #isOrdered |
| */ |
| NamingEnumeration<?> getAll() throws NamingException; |
| |
| /** |
| * Retrieves one of this attribute's values. |
| * If the attribute has more than one value and is unordered, any one of |
| * the values is returned. |
| * If the attribute has more than one value and is ordered, the |
| * first value is returned. |
| * |
| * @return A possibly null object representing one of |
| * the attribute's value. It is null if the attribute's value |
| * is null. |
| * @exception NamingException |
| * If a naming exception was encountered while retrieving |
| * the value. |
| * @exception java.util.NoSuchElementException |
| * If this attribute has no values. |
| */ |
| Object get() throws NamingException; |
| |
| /** |
| * Retrieves the number of values in this attribute. |
| * |
| * @return The nonnegative number of values in this attribute. |
| */ |
| int size(); |
| |
| /** |
| * Retrieves the id of this attribute. |
| * |
| * @return The id of this attribute. It cannot be null. |
| */ |
| String getID(); |
| |
| /** |
| * Determines whether a value is in the attribute. |
| * Equality is determined by the implementation, which may use |
| * <tt>Object.equals()</tt> or schema information to determine equality. |
| * |
| * @param attrVal The possibly null value to check. If null, check |
| * whether the attribute has an attribute value whose value is null. |
| * @return true if attrVal is one of this attribute's values; false otherwise. |
| * @see java.lang.Object#equals |
| * @see BasicAttribute#equals |
| */ |
| boolean contains(Object attrVal); |
| /** |
| * Adds a new value to the attribute. |
| * If the attribute values are unordered and |
| * <tt>attrVal</tt> is already in the attribute, this method does nothing. |
| * If the attribute values are ordered, <tt>attrVal</tt> is added to the end of |
| * the list of attribute values. |
| *<p> |
| * Equality is determined by the implementation, which may use |
| * <tt>Object.equals()</tt> or schema information to determine equality. |
| * |
| * @param attrVal The new possibly null value to add. If null, null |
| * is added as an attribute value. |
| * @return true if a value was added; false otherwise. |
| */ |
| boolean add(Object attrVal); |
| |
| /** |
| * Removes a specified value from the attribute. |
| * If <tt>attrval</tt> is not in the attribute, this method does nothing. |
| * If the attribute values are ordered, the first occurrence of |
| * <tt>attrVal</tt> is removed and attribute values at indices greater |
| * than the removed |
| * value are shifted up towards the head of the list (and their indices |
| * decremented by one). |
| *<p> |
| * Equality is determined by the implementation, which may use |
| * <tt>Object.equals()</tt> or schema information to determine equality. |
| * |
| * @param attrval The possibly null value to remove from this attribute. |
| * If null, remove the attribute value that is null. |
| * @return true if the value was removed; false otherwise. |
| */ |
| boolean remove(Object attrval); |
| |
| /** |
| * Removes all values from this attribute. |
| */ |
| void clear(); |
| |
| /** |
| * Retrieves the syntax definition associated with the attribute. |
| * An attribute's syntax definition specifies the format |
| * of the attribute's value(s). Note that this is different from |
| * the attribute value's representation as a Java object. Syntax |
| * definition refers to the directory's notion of <em>syntax</em>. |
| *<p> |
| * For example, even though a value might be |
| * a Java String object, its directory syntax might be "Printable String" |
| * or "Telephone Number". Or a value might be a byte array, and its |
| * directory syntax is "JPEG" or "Certificate". |
| * For example, if this attribute's syntax is "JPEG", |
| * this method would return the syntax definition for "JPEG". |
| * <p> |
| * The information that you can retrieve from a syntax definition |
| * is directory-dependent. |
| *<p> |
| * If an implementation does not support schemas, it should throw |
| * OperationNotSupportedException. If an implementation does support |
| * schemas, it should define this method to return the appropriate |
| * information. |
| * @return The attribute's syntax definition. Null if the implementation |
| * supports schemas but this particular attribute does not have |
| * any schema information. |
| * @exception OperationNotSupportedException If getting the schema |
| * is not supported. |
| * @exception NamingException If a naming exception occurs while getting |
| * the schema. |
| */ |
| |
| DirContext getAttributeSyntaxDefinition() throws NamingException; |
| |
| /** |
| * Retrieves the attribute's schema definition. |
| * An attribute's schema definition contains information |
| * such as whether the attribute is multivalued or single-valued, |
| * the matching rules to use when comparing the attribute's values. |
| * |
| * The information that you can retrieve from an attribute definition |
| * is directory-dependent. |
| * |
| *<p> |
| * If an implementation does not support schemas, it should throw |
| * OperationNotSupportedException. If an implementation does support |
| * schemas, it should define this method to return the appropriate |
| * information. |
| * @return This attribute's schema definition. Null if the implementation |
| * supports schemas but this particular attribute does not have |
| * any schema information. |
| * @exception OperationNotSupportedException If getting the schema |
| * is not supported. |
| * @exception NamingException If a naming exception occurs while getting |
| * the schema. |
| */ |
| DirContext getAttributeDefinition() throws NamingException; |
| |
| /** |
| * Makes a copy of the attribute. |
| * The copy contains the same attribute values as the original attribute: |
| * the attribute values are not themselves cloned. |
| * Changes to the copy will not affect the original and vice versa. |
| * |
| * @return A non-null copy of the attribute. |
| */ |
| Object clone(); |
| |
| //----------- Methods to support ordered multivalued attributes |
| |
| /** |
| * Determines whether this attribute's values are ordered. |
| * If an attribute's values are ordered, duplicate values are allowed. |
| * If an attribute's values are unordered, they are presented |
| * in any order and there are no duplicate values. |
| * @return true if this attribute's values are ordered; false otherwise. |
| * @see #get(int) |
| * @see #remove(int) |
| * @see #add(int, java.lang.Object) |
| * @see #set(int, java.lang.Object) |
| */ |
| boolean isOrdered(); |
| |
| /** |
| * Retrieves the attribute value from the ordered list of attribute values. |
| * This method returns the value at the <tt>ix</tt> index of the list of |
| * attribute values. |
| * If the attribute values are unordered, |
| * this method returns the value that happens to be at that index. |
| * @param ix The index of the value in the ordered list of attribute values. |
| * 0 <= <tt>ix</tt> < <tt>size()</tt>. |
| * @return The possibly null attribute value at index <tt>ix</tt>; |
| * null if the attribute value is null. |
| * @exception NamingException If a naming exception was encountered while |
| * retrieving the value. |
| * @exception IndexOutOfBoundsException If <tt>ix</tt> is outside the specified range. |
| */ |
| Object get(int ix) throws NamingException; |
| |
| /** |
| * Removes an attribute value from the ordered list of attribute values. |
| * This method removes the value at the <tt>ix</tt> index of the list of |
| * attribute values. |
| * If the attribute values are unordered, |
| * this method removes the value that happens to be at that index. |
| * Values located at indices greater than <tt>ix</tt> are shifted up towards |
| * the front of the list (and their indices decremented by one). |
| * |
| * @param ix The index of the value to remove. |
| * 0 <= <tt>ix</tt> < <tt>size()</tt>. |
| * @return The possibly null attribute value at index <tt>ix</tt> that was removed; |
| * null if the attribute value is null. |
| * @exception IndexOutOfBoundsException If <tt>ix</tt> is outside the specified range. |
| */ |
| Object remove(int ix); |
| |
| /** |
| * Adds an attribute value to the ordered list of attribute values. |
| * This method adds <tt>attrVal</tt> to the list of attribute values at |
| * index <tt>ix</tt>. |
| * Values located at indices at or greater than <tt>ix</tt> are |
| * shifted down towards the end of the list (and their indices incremented |
| * by one). |
| * If the attribute values are unordered and already have <tt>attrVal</tt>, |
| * <tt>IllegalStateException</tt> is thrown. |
| * |
| * @param ix The index in the ordered list of attribute values to add the new value. |
| * 0 <= <tt>ix</tt> <= <tt>size()</tt>. |
| * @param attrVal The possibly null attribute value to add; if null, null is |
| * the value added. |
| * @exception IndexOutOfBoundsException If <tt>ix</tt> is outside the specified range. |
| * @exception IllegalStateException If the attribute values are unordered and |
| * <tt>attrVal</tt> is one of those values. |
| */ |
| void add(int ix, Object attrVal); |
| |
| |
| /** |
| * Sets an attribute value in the ordered list of attribute values. |
| * This method sets the value at the <tt>ix</tt> index of the list of |
| * attribute values to be <tt>attrVal</tt>. The old value is removed. |
| * If the attribute values are unordered, |
| * this method sets the value that happens to be at that index |
| * to <tt>attrVal</tt>, unless <tt>attrVal</tt> is already one of the values. |
| * In that case, <tt>IllegalStateException</tt> is thrown. |
| * |
| * @param ix The index of the value in the ordered list of attribute values. |
| * 0 <= <tt>ix</tt> < <tt>size()</tt>. |
| * @param attrVal The possibly null attribute value to use. |
| * If null, 'null' replaces the old value. |
| * @return The possibly null attribute value at index ix that was replaced. |
| * Null if the attribute value was null. |
| * @exception IndexOutOfBoundsException If <tt>ix</tt> is outside the specified range. |
| * @exception IllegalStateException If <tt>attrVal</tt> already exists and the |
| * attribute values are unordered. |
| */ |
| Object set(int ix, Object attrVal); |
| |
| /** |
| * Use serialVersionUID from JNDI 1.1.1 for interoperability. |
| */ |
| static final long serialVersionUID = 8707690322213556804L; |
| } |