diff options
author | Mark Wielaard <mark@klomp.org> | 2000-11-18 02:00:06 +0000 |
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committer | Mark Wielaard <mark@gcc.gnu.org> | 2000-11-18 02:00:06 +0000 |
commit | c5f651bf3ff1ec27c25ebdcd14d55bc125c020a4 (patch) | |
tree | 1cdd2c04005f269ae818823da99af56069055ae4 /libjava/java/util/jar/Attributes.java | |
parent | c003f37865e09e796e26de62b6eb9c1dfa03e632 (diff) | |
download | gcc-c5f651bf3ff1ec27c25ebdcd14d55bc125c020a4.zip gcc-c5f651bf3ff1ec27c25ebdcd14d55bc125c020a4.tar.gz gcc-c5f651bf3ff1ec27c25ebdcd14d55bc125c020a4.tar.bz2 |
backport: *.java: Reformat all to unofficial standard coding style.
Merge with Classpath (changes by Bryce McKinlay)
* java/util/jar/*.java: Reformat all to unofficial standard coding
style. No changes of substance.
From-SVN: r37538
Diffstat (limited to 'libjava/java/util/jar/Attributes.java')
-rw-r--r-- | libjava/java/util/jar/Attributes.java | 955 |
1 files changed, 491 insertions, 464 deletions
diff --git a/libjava/java/util/jar/Attributes.java b/libjava/java/util/jar/Attributes.java index 6a01be5..b18b5d8 100644 --- a/libjava/java/util/jar/Attributes.java +++ b/libjava/java/util/jar/Attributes.java @@ -7,7 +7,7 @@ GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. - + GNU Classpath 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 @@ -54,533 +54,560 @@ import java.util.Set; * @see java.util.jar.Attributes.Name * @author Mark Wielaard (mark@klomp.org) */ -public class Attributes implements Cloneable, Map { +public class Attributes implements Cloneable, Map +{ + + // Fields + + /** + * The map that holds all the attribute name/value pairs. In this + * implementation it is actually a Hashtable, but that can be different in + * other implementations. + */ + protected Map map; + + // Inner class + + /** + * Represents a name of a Manifest Attribute. Defines a couple of well + * know names for the general main attributes, stand alone application + * attributes, applet attributes, extension identification attributes, + * package versioning and sealing attributes, file contents attributes, + * bean objects attribute and signing attributes. See the + * <p> + * The characters of a Name must obey the following restrictions: + * <ul> + * <li> Must contain at least one character + * <li> The first character must be alphanumeric (a-z, A-Z, 0-9) + * <li> All other characters must be alphanumeric, a '-' or a '_' + * </ul> + * <p> + * When comparing Names (with <code>equals</code>) all characters are + * converted to lowercase. But you can get the original case sensitive + * string with the <code>toString()</code> method. + * + * @since 1.2 + * @author Mark Wielaard (mark@klomp.org) + */ + public static class Name + { // Fields + // General Main Attributes + /** - * The map that holds all the attribute name/value pairs. In this - * implementation it is actually a Hashtable, but that can be different in - * other implementations. + * General main attribute - + * the version of this Manifest file. */ - protected Map map; - - // Inner class - + public static final Name MANIFEST_VERSION = new Name("Manifest-Version"); /** - * Represents a name of a Manifest Attribute. Defines a couple of well - * know names for the general main attributes, stand alone application - * attributes, applet attributes, extension identification attributes, - * package versioning and sealing attributes, file contents attributes, - * bean objects attribute and signing attributes. See the - * <p> - * The characters of a Name must obey the following restrictions: - * <ul> - * <li> Must contain at least one character - * <li> The first character must be alphanumeric (a-z, A-Z, 0-9) - * <li> All other characters must be alphanumeric, a '-' or a '_' - * </ul> - * <p> - * When comparing Names (with <code>equals</code>) all characters are - * converted to lowercase. But you can get the original case sensitive - * string with the <code>toString()</code> method. - * - * @since 1.2 - * @author Mark Wielaard (mark@klomp.org) + * General main attribute - + * tool and version that created this Manifest file. */ - public static class Name { - - // Fields - - // General Main Attributes - - /** - * General main attribute - - * the version of this Manifest file. - */ - public static final Name MANIFEST_VERSION - = new Name("Manifest-Version"); - /** - * General main attribute - - * tool and version that created this Manifest file. - */ - public static final Name CREATED_BY - = new Name("Created-By"); - /** - * General main attribute - - * the version of the jar file signature. - */ - public static final Name SIGNATURE_VERSION - = new Name("Signature-Version"); - /** - * General main attribute - - * (relative) URLs of the libraries/classpaths that the Classes in - * this jar file depend on. - */ - public static final Name CLASS_PATH - = new Name("Class-Path"); - - /** - * Stand alone application attribute - - * the entry (without the .class ending) that is the main - * class of this jar file. - */ - public static final Name MAIN_CLASS - = new Name("Main-Class"); - - /** - * Applet attribute - - * a list of extension libraries that the applet in this - * jar file depends on. - * For every named extension there should be some Attributes in the - * Manifest manifest file with the following Names: - * <ul> - * <li> <extension>-Extension-Name: - * unique name of the extension - * <li> <extension>-Specification-Version: - * minimum specification version - * <li> <extension>-Implementation-Version: - * minimum implementation version - * <li> <extension>-Implementation-Vendor-Id: - * unique id of implementation vendor - * <li> <extension>-Implementation-URL: - * where the latest version of the extension library can be found - * </ul> - */ - public static final Name EXTENSION_LIST - = new Name("Extension-List"); - - /** - * Extension identification attribute - - * the name if the extension library contained in the jar. - */ - public static final Name EXTENSION_NAME - = new Name("Extension-Name"); - /** - * Extension identification attribute - - * synonym for <code>EXTENSTION_NAME</code>. - */ - public static final Name EXTENSION_INSTALLATION - = EXTENSION_NAME; - - // Package versioning and sealing attributes - /** - * Package versioning - - * name of extension library contained in this jar. - */ - public static final Name IMPLEMENTATION_TITLE - = new Name("Implementation-Title"); - /** - * Package versioning - - * version of the extension library contained in this jar. - */ - public static final Name IMPLEMENTATION_VERSION - = new Name("Implementation-Version"); - /** - * Package versioning - - * name of extension library creator contained in this jar. - */ - public static final Name IMPLEMENTATION_VENDOR - = new Name("Implementation-Vendor"); - /** - * Package versioning - - * unique id of extension library creator. - */ - public static final Name IMPLEMENTATION_VENDOR_ID - = new Name("Implementation-Vendor-Id"); - /** - * Package versioning - - * location where this implementation can be downloaded. - */ - public static final Name IMPLEMENTATION_URL - = new Name("Implementation-URL"); - /** - * Package versioning - - * title of the specification contained in this jar. - */ - public static final Name SPECIFICATION_TITLE - = new Name("Specification-Title"); - /** - * Package versioning - - * version of the specification contained in this jar. - */ - public static final Name SPECIFICATION_VERSION - = new Name("Specification-Version"); - /** - * Package versioning - - * organisation that maintains the specification contains in this - * jar. - */ - public static final Name SPECIFICATION_VENDOR - = new Name("Specification-Vendor"); - /** - * Package sealing - - * whether (all) package(s) is(/are) sealed. Value is either "true" - * or "false". - */ - public static final Name SEALED - = new Name("Sealed"); - - /** - * File contents attribute - - * Mime type and subtype for the jar entry. - */ - public static final Name CONTENT_TYPE - = new Name("Content-Type"); - - /** - * Bean objects attribute - - * whether the entry is a Java Bean. Value is either "true" or "false". - */ - public static final Name JAVA_BEAN - = new Name("Java-Bean"); - - /** - * Signing attribute - - * application specific signing attribute. Must be understood by - * the manifest parser when present to validate the jar (entry). - */ - public static final Name MAGIC - = new Name("Magic"); - - /** The (lowercase) String representation of this Name */ - private final String name; - /** The original String given to the constructor */ - private final String origName; - - // Constructor - - /** - * Creates a new Name from the given String. - * Throws an IllegalArgumentException if the given String is empty or - * contains any illegal Name characters. - * - * @param name the name of the new Name - * @exception IllegalArgumentException if name isn't a valid String - * representation of a Name - * @exception NullPointerException if name is null - */ - public Name(String name) throws IllegalArgumentException, - NullPointerException { - // name must not be null - // this will throw a NullPointerException if it is - char chars[] = name.toCharArray(); - - // there must be at least one character - if (chars.length == 0) - throw new IllegalArgumentException( - "There must be at least one character in a name"); - - // first character must be alphanum - char c = chars[0]; - if (!((c >= 'a' && c <= 'z') || - (c >= 'A' && c <= 'Z') || - (c >= '0' && c <= '9'))) - throw new IllegalArgumentException( - "First character must be alphanum"); - - // all other characters must be alphanums, '-' or '_' - for (int i = 1; i < chars.length; i++) { - if (!((c >= 'a' && c <= 'z') || - (c >= 'A' && c <= 'Z') || - (c >= '0' && c <= '9') || - (c == '-') || (c == '_'))) - throw new IllegalArgumentException( - "Characters must be alphanums, '-' or '_'"); - } - - // Still here? Then convert to lower case and be done. - // Store the original name for toString(); - this.origName = name; - this.name = name.toLowerCase(); - } - - /** - * Returns the hash code of the (lowercase) String representation of - * this Name. - */ - public int hashCode() { - return name.hashCode(); - } - - /** - * Checks if another object is equal to this Name object. - * Another object is equal to this Name object if it is an instance of - * Name and the (lowercase) string representation of the name is equal. - */ - public boolean equals(Object o) { - // Quick and dirty check - if (name == o) - return true; - - try { - // Note that the constructor already converts the strings to - // lowercase. - String otherName = ((Name)o).name; - return name.equals(otherName); - } catch (ClassCastException cce) { - return false; - } catch (NullPointerException npe) { - return false; - } - } - - /** - * Returns the string representation of this Name as given to the - * constructor (not neccesarily the lower case representation). - */ - public String toString() { - return origName; - } - } - - // Constructors - + public static final Name CREATED_BY = new Name("Created-By"); /** - * Creates an empty Attributes map. + * General main attribute - + * the version of the jar file signature. */ - public Attributes() { - map = new Hashtable(); - } - + public static final Name SIGNATURE_VERSION + = new Name("Signature-Version"); /** - * Creates an empty Attributes map with the given initial size. - * @param size the initial size of the underlying map + * General main attribute - + * (relative) URLs of the libraries/classpaths that the Classes in + * this jar file depend on. */ - public Attributes(int size) { - map = new Hashtable(size); - } + public static final Name CLASS_PATH = new Name("Class-Path"); /** - * Creates an Attributes map with the initial values taken from another - * Attributes map. - * @param attr Attributes map to take the initial values from + * Stand alone application attribute - + * the entry (without the .class ending) that is the main + * class of this jar file. */ - public Attributes(Attributes attr) { - map = new Hashtable(attr.map); - } - - // Methods + public static final Name MAIN_CLASS = new Name("Main-Class"); /** - * Gets the value of an attribute name given as a String. - * - * @param name a String describing the Name to look for - * @return the value gotten from the map of null when not found + * Applet attribute - + * a list of extension libraries that the applet in this + * jar file depends on. + * For every named extension there should be some Attributes in the + * Manifest manifest file with the following Names: + * <ul> + * <li> <extension>-Extension-Name: + * unique name of the extension + * <li> <extension>-Specification-Version: + * minimum specification version + * <li> <extension>-Implementation-Version: + * minimum implementation version + * <li> <extension>-Implementation-Vendor-Id: + * unique id of implementation vendor + * <li> <extension>-Implementation-URL: + * where the latest version of the extension library can be found + * </ul> */ - public String getValue(String name) { - return (String)get(new Name(name)); - } + public static final Name EXTENSION_LIST = new Name("Extension-List"); /** - * Gets the value of the given attribute name. - * - * @param name the Name to look for - * @return the value gotten from the map of null when not found + * Extension identification attribute - + * the name if the extension library contained in the jar. */ - public String getValue(Name name) { - return (String)get(name); - } - + public static final Name EXTENSION_NAME = new Name("Extension-Name"); /** - * Stores an attribute name (represented by a String) and value in this - * Attributes map. - * When the (case insensitive string) name already exists the value is - * replaced and the old value is returned. - * - * @param name a (case insensitive) String representation of the attribite - * name to add/replace - * @param value the (new) value of the attribute name - * @returns the old value of the attribute name or null if it didn't exist - * yet + * Extension identification attribute - + * synonym for <code>EXTENSTION_NAME</code>. */ - public String putValue(String name, String value) - { - return putValue(new Name(name), value); - } + public static final Name EXTENSION_INSTALLATION = EXTENSION_NAME; + // Package versioning and sealing attributes /** - * Stores an attribute name (represented by a String) and value in this - * Attributes map. - * When the name already exists the value is replaced and the old value - * is returned. - * <p> - * I don't know why there is no public method with this signature. I think - * there should be one. - * - * @param name the attribite name to add/replace - * @param value the (new) value of the attribute name - * @returns the old value of the attribute name or null if it didn't exist - * yet + * Package versioning - + * name of extension library contained in this jar. */ - private String putValue(Name name, String value) - { - return (String)put(name, value); - } - - // Methods from Cloneable interface - + public static final Name IMPLEMENTATION_TITLE + = new Name("Implementation-Title"); /** - * Return a clone of this attribute map. + * Package versioning - + * version of the extension library contained in this jar. */ - public Object clone() { - return new Attributes(this); - } - - // Methods from Map interface - + public static final Name IMPLEMENTATION_VERSION + = new Name("Implementation-Version"); /** - * Removes all attributes. + * Package versioning - + * name of extension library creator contained in this jar. */ - public void clear() { - map.clear(); - } - + public static final Name IMPLEMENTATION_VENDOR + = new Name("Implementation-Vendor"); /** - * Checks to see if there is an attribute with the specified name. - * XXX - what if the object is a String? - * - * @param attrName the name of the attribute to check - * @return true if there is an attribute with the specified name, false - * otherwise + * Package versioning - + * unique id of extension library creator. */ - public boolean containsKey(Object attrName) { - return map.containsKey(attrName); - } - + public static final Name IMPLEMENTATION_VENDOR_ID + = new Name("Implementation-Vendor-Id"); /** - * Checks to see if there is an attribute name with the specified value. - * - * @param attrValue the value of a attribute to check - * @return true if there is an attribute name with the specified value, - * false otherwise + * Package versioning - + * location where this implementation can be downloaded. */ - public boolean containsValue(Object attrValue) { - return map.containsValue(attrValue); - } - + public static final Name IMPLEMENTATION_URL + = new Name("Implementation-URL"); /** - * Gives a Set of attribute name and values pairs as MapEntries. - * @see java.util.Map.Entry - * @see java.util.Map#entrySet() - * - * @return a set of attribute name value pairs + * Package versioning - + * title of the specification contained in this jar. */ - public Set entrySet() { - return map.entrySet(); - } - + public static final Name SPECIFICATION_TITLE + = new Name("Specification-Title"); /** - * Checks to see if two Attributes are equal. The supplied object must be - * a real instance of Attributes and contain the same attribute name/value - * pairs. - * - * @param o another Attribute object which should be checked for equality - * @return true if the object is an instance of Attributes and contains the - * same name/value pairs, false otherwise + * Package versioning - + * version of the specification contained in this jar. */ - public boolean equals(Object o) { - // quick and dirty check - if (this == o) - return true; - - try { - return map.equals(((Attributes)o).map); - } catch (ClassCastException cce) { - return false; - } catch (NullPointerException npe) { - return false; - } - } - + public static final Name SPECIFICATION_VERSION + = new Name("Specification-Version"); /** - * Gets the value of a specified attribute name. - * XXX - what if the object is a String? - * - * @param attrName the name of the attribute we want the value of - * @return the value of the specified attribute name or null when there is - * no such attribute name + * Package versioning - + * organisation that maintains the specification contains in this + * jar. */ - public Object get(Object attrName) { - return map.get(attrName); - } - + public static final Name SPECIFICATION_VENDOR + = new Name("Specification-Vendor"); /** - * Returns the hashcode of the attribute name/value map. + * Package sealing - + * whether (all) package(s) is(/are) sealed. Value is either "true" + * or "false". */ - public int hashCode() { - return map.hashCode(); - } + public static final Name SEALED = new Name("Sealed"); /** - * Returns true if there are no attributes set, false otherwise. + * File contents attribute - + * Mime type and subtype for the jar entry. */ - public boolean isEmpty() { - return map.isEmpty(); - } + public static final Name CONTENT_TYPE = new Name("Content-Type"); /** - * Gives a Set of all the values of defined attribute names. + * Bean objects attribute - + * whether the entry is a Java Bean. Value is either "true" or "false". */ - public Set keySet() { - return map.keySet(); - } + public static final Name JAVA_BEAN = new Name("Java-Bean"); /** - * Adds or replaces a attribute name/value pair. - * XXX - What if the name is a string? What if the name is neither a Name - * nor a String? What if the value is not a string? - * - * @param name the name of the attribute - * @param value the (new) value of the attribute - * @return the old value of the attribute or null when there was no old - * attribute with this name + * Signing attribute - + * application specific signing attribute. Must be understood by + * the manifest parser when present to validate the jar (entry). */ - public Object put(Object name, Object value) { - return map.put(name, value); - } + public static final Name MAGIC = new Name("Magic"); + + /** The (lowercase) String representation of this Name */ + private final String name; + /** The original String given to the constructor */ + private final String origName; + + // Constructor /** - * Adds or replaces all attribute name/value pairs from another - * Attributes object to this one. The supplied Map must be an instance of - * Attributes. - * - * @param attr the Attributes object to merge with this one - * @exception ClassCastException if the supplied map is not an instance of - * Attributes + * Creates a new Name from the given String. + * Throws an IllegalArgumentException if the given String is empty or + * contains any illegal Name characters. + * + * @param name the name of the new Name + * @exception IllegalArgumentException if name isn't a valid String + * representation of a Name + * @exception NullPointerException if name is null */ - public void putAll(Map attr) { - if (!(attr instanceof Attributes)) { - throw new ClassCastException( - "Supplied Map is not an instance of Attributes"); - } - map.putAll(attr); + public Name(String name) throws IllegalArgumentException, + NullPointerException + { + // name must not be null + // this will throw a NullPointerException if it is + char chars[] = name.toCharArray(); + + // there must be at least one character + if (chars.length == 0) + throw new + IllegalArgumentException + ("There must be at least one character in a name"); + + // first character must be alphanum + char c = chars[0]; + if (!((c >= 'a' && c <= 'z') || + (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'))) + throw new + IllegalArgumentException("First character must be alphanum"); + + // all other characters must be alphanums, '-' or '_' + for (int i = 1; i < chars.length; i++) + { + if (!((c >= 'a' && c <= 'z') || + (c >= 'A' && c <= 'Z') || + (c >= '0' && c <= '9') || (c == '-') || (c == '_'))) + throw new + IllegalArgumentException + ("Characters must be alphanums, '-' or '_'"); + } + + // Still here? Then convert to lower case and be done. + // Store the original name for toString(); + this.origName = name; + this.name = name.toLowerCase(); } /** - * Remove a attribute name/value pair. - * XXX - What if the name is a String? - * - * @param name the name of the attribute name/value pair to remove - * @return the old value of the attribute or null if the attribute didn't - * exist + * Returns the hash code of the (lowercase) String representation of + * this Name. */ - public Object remove(Object name) { - return map.remove(name); + public int hashCode() + { + return name.hashCode(); } /** - * Returns the number of defined attribute name/value pairs. + * Checks if another object is equal to this Name object. + * Another object is equal to this Name object if it is an instance of + * Name and the (lowercase) string representation of the name is equal. */ - public int size() { - return map.size(); + public boolean equals(Object o) + { + // Quick and dirty check + if (name == o) + return true; + + try + { + // Note that the constructor already converts the strings to + // lowercase. + String otherName = ((Name) o).name; + return name.equals(otherName); + } + catch (ClassCastException cce) + { + return false; + } + catch (NullPointerException npe) + { + return false; + } } /** - * Returns all the values of the defined attribute name/value pairs as a - * Collection. + * Returns the string representation of this Name as given to the + * constructor (not neccesarily the lower case representation). */ - public Collection values() { - return map.values(); + public String toString() + { + return origName; } + } + + // Constructors + + /** + * Creates an empty Attributes map. + */ + public Attributes() + { + map = new Hashtable(); + } + + /** + * Creates an empty Attributes map with the given initial size. + * @param size the initial size of the underlying map + */ + public Attributes(int size) + { + map = new Hashtable(size); + } + + /** + * Creates an Attributes map with the initial values taken from another + * Attributes map. + * @param attr Attributes map to take the initial values from + */ + public Attributes(Attributes attr) + { + map = new Hashtable(attr.map); + } + + // Methods + + /** + * Gets the value of an attribute name given as a String. + * + * @param name a String describing the Name to look for + * @return the value gotten from the map of null when not found + */ + public String getValue(String name) + { + return (String) get(new Name(name)); + } + + /** + * Gets the value of the given attribute name. + * + * @param name the Name to look for + * @return the value gotten from the map of null when not found + */ + public String getValue(Name name) + { + return (String) get(name); + } + + /** + * Stores an attribute name (represented by a String) and value in this + * Attributes map. + * When the (case insensitive string) name already exists the value is + * replaced and the old value is returned. + * + * @param name a (case insensitive) String representation of the attribite + * name to add/replace + * @param value the (new) value of the attribute name + * @returns the old value of the attribute name or null if it didn't exist + * yet + */ + public String putValue(String name, String value) + { + return putValue(new Name(name), value); + } + + /** + * Stores an attribute name (represented by a String) and value in this + * Attributes map. + * When the name already exists the value is replaced and the old value + * is returned. + * <p> + * I don't know why there is no public method with this signature. I think + * there should be one. + * + * @param name the attribite name to add/replace + * @param value the (new) value of the attribute name + * @returns the old value of the attribute name or null if it didn't exist + * yet + */ + private String putValue(Name name, String value) + { + return (String) put(name, value); + } + + // Methods from Cloneable interface + + /** + * Return a clone of this attribute map. + */ + public Object clone() + { + return new Attributes(this); + } + + // Methods from Map interface + + /** + * Removes all attributes. + */ + public void clear() + { + map.clear(); + } + + /** + * Checks to see if there is an attribute with the specified name. + * XXX - what if the object is a String? + * + * @param attrName the name of the attribute to check + * @return true if there is an attribute with the specified name, false + * otherwise + */ + public boolean containsKey(Object attrName) + { + return map.containsKey(attrName); + } + + /** + * Checks to see if there is an attribute name with the specified value. + * + * @param attrValue the value of a attribute to check + * @return true if there is an attribute name with the specified value, + * false otherwise + */ + public boolean containsValue(Object attrValue) + { + return map.containsValue(attrValue); + } + + /** + * Gives a Set of attribute name and values pairs as MapEntries. + * @see java.util.Map.Entry + * @see java.util.Map#entrySet() + * + * @return a set of attribute name value pairs + */ + public Set entrySet() + { + return map.entrySet(); + } + + /** + * Checks to see if two Attributes are equal. The supplied object must be + * a real instance of Attributes and contain the same attribute name/value + * pairs. + * + * @param o another Attribute object which should be checked for equality + * @return true if the object is an instance of Attributes and contains the + * same name/value pairs, false otherwise + */ + public boolean equals(Object o) + { + // quick and dirty check + if (this == o) + return true; + + try + { + return map.equals(((Attributes) o).map); + } + catch (ClassCastException cce) + { + return false; + } + catch (NullPointerException npe) + { + return false; + } + } + + /** + * Gets the value of a specified attribute name. + * XXX - what if the object is a String? + * + * @param attrName the name of the attribute we want the value of + * @return the value of the specified attribute name or null when there is + * no such attribute name + */ + public Object get(Object attrName) + { + return map.get(attrName); + } + + /** + * Returns the hashcode of the attribute name/value map. + */ + public int hashCode() + { + return map.hashCode(); + } + + /** + * Returns true if there are no attributes set, false otherwise. + */ + public boolean isEmpty() + { + return map.isEmpty(); + } + + /** + * Gives a Set of all the values of defined attribute names. + */ + public Set keySet() + { + return map.keySet(); + } + + /** + * Adds or replaces a attribute name/value pair. + * XXX - What if the name is a string? What if the name is neither a Name + * nor a String? What if the value is not a string? + * + * @param name the name of the attribute + * @param value the (new) value of the attribute + * @return the old value of the attribute or null when there was no old + * attribute with this name + */ + public Object put(Object name, Object value) + { + return map.put(name, value); + } + + /** + * Adds or replaces all attribute name/value pairs from another + * Attributes object to this one. The supplied Map must be an instance of + * Attributes. + * + * @param attr the Attributes object to merge with this one + * @exception ClassCastException if the supplied map is not an instance of + * Attributes + */ + public void putAll(Map attr) + { + if (!(attr instanceof Attributes)) + { + throw new + ClassCastException("Supplied Map is not an instance of Attributes"); + } + map.putAll(attr); + } + + /** + * Remove a attribute name/value pair. + * XXX - What if the name is a String? + * + * @param name the name of the attribute name/value pair to remove + * @return the old value of the attribute or null if the attribute didn't + * exist + */ + public Object remove(Object name) + { + return map.remove(name); + } + + /** + * Returns the number of defined attribute name/value pairs. + */ + public int size() + { + return map.size(); + } + + /** + * Returns all the values of the defined attribute name/value pairs as a + * Collection. + */ + public Collection values() + { + return map.values(); + } } |