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 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is
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package com.netscape.jndi.ldap.schema;

import java.util.NoSuchElementException;

import javax.naming.Name;
import javax.naming.NameAlreadyBoundException;
import javax.naming.NameParser;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.OperationNotSupportedException;
import javax.naming.directory.DirContext;

import com.netscape.jndi.ldap.common.DirContextAdapter;

public class SchemaDirContext extends DirContextAdapter {

    public static final String CLASSDEF = "ClassDefinition";
    public static final String ATTRDEF = "AttributeDefinition";
    public static final String MRULEDEF = "MatchingRule";


    String m_path;

    public void close() throws NamingException {
        ; //NOP
    }

    /**
     * Name operations
     */

    public String composeName(String name, String prefix) throws NamingException {
        return name + "," + prefix;
    }

    public Name composeName(Name name, Name prefix) throws NamingException {
        String compoundName = composeName(name.toString(), prefix.toString());
        return SchemaNameParser.getParser().parse(compoundName);
    }

    public String getNameInNamespace() throws NamingException {
        return new String(m_path);
    }

    public NameParser getNameParser(String name) throws NamingException {
        return SchemaNameParser.getParser();
    }

    public NameParser getNameParser(Name name) throws NamingException {
        return SchemaNameParser.getParser();
    }


    /**
     * Naming Bind operations
     */

    public void bind(String name, Object obj) throws NamingException {
        if (obj instanceof DirContext) {
            createSubcontext(name, ((DirContext)obj).getAttributes(""));
        }
        else {
            throw new IllegalArgumentException("Can not bind this type of object");
        }
    }

    public void bind(Name name, Object obj) throws NamingException {
        bind(name.toString(), obj);
    }

    public void rebind(String name, Object obj) throws NamingException {
        try {
            bind(name, obj);
        }
        catch (NameAlreadyBoundException ex) {
            unbind(name);
            bind(name, obj);
        }
    }

    public void rebind(Name name, Object obj) throws NamingException {
        rebind(name.toString(), obj);
    }

    public void rename(String oldName, String newName) throws NamingException {
        throw new OperationNotSupportedException();
    }

    public void rename(Name oldName, Name newName) throws NamingException {
        rename(oldName.toString(), newName.toString());
    }

    public void unbind(String name) throws NamingException {
        // In ldap every entry is naming context
        destroySubcontext(name);
    }

    public void unbind(Name name) throws NamingException {
        // In ldap every entry is naming context
        destroySubcontext(name);
    }

    /**
     * Empty enumeration for list operations
     */
    class EmptyNamingEnumeration<T> implements NamingEnumeration<T> {

        public T next() throws NamingException{
            throw new NoSuchElementException("EmptyNamingEnumeration");
        }

        public T nextElement() {
            throw new NoSuchElementException("EmptyNamingEnumeration");
        }

        public boolean hasMore() throws NamingException{
            return false;
        }

        public boolean hasMoreElements() {
            return false;
        }

        public void close() {}
    }

    static class SchemaObjectSubordinateNamePair {
        SchemaDirContext schemaObj;
        String subordinateName;

        public SchemaObjectSubordinateNamePair(SchemaDirContext object, String subordinateName) {
            this.schemaObj = object;
            this.subordinateName = subordinateName;
        }

        public String toString() {
            StringBuffer str = new StringBuffer("SchemaObjectSubordinateNamePair{obj:");
            str.append(((schemaObj == null) ? "null" : schemaObj.toString()));
            str.append(" name:");
            str.append(subordinateName);
            str.append("}");
            return str.toString();
        }
    }
}