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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package com.sun.jndi.toolkit.url;

import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.spi.ResolveResult;
import javax.naming.spi.DirectoryManager;

import java.util.Hashtable;

This abstract class is a generic URL DirContext that accepts as the
name argument either a string URL or a Name whose first component
is a URL. It resolves the URL to a target context and then continues
the operation using the remaining name in the target context as if
the first component names a junction.
A subclass must define getRootURLContext()
to process the URL into head/tail pieces. If it wants to control how
URL strings are parsed and compared for the rename() operation, then
it should override getNonRootURLSuffixes() and urlEquals().
Author:
Scott Seligman, Rosanna Lee/**
 * This abstract class is a generic URL DirContext that accepts as the
 * name argument either a string URL or a Name whose first component
 * is a URL. It resolves the URL to a target context and then continues
 * the operation using the remaining name in the target context as if
 * the first component names a junction.
 *
 * A subclass must define getRootURLContext()
 * to process the URL into head/tail pieces. If it wants to control how
 * URL strings are parsed and compared for the rename() operation, then
 * it should override getNonRootURLSuffixes() and urlEquals().
 *
 * @author Scott Seligman
 * @author Rosanna Lee
 */

abstract public class GenericURLDirContext extends GenericURLContext
implements DirContext {

    protected GenericURLDirContext(Hashtable env) {
        super(env);
    }

    
Gets the context in which to continue the operation. This method
is called when this context is asked to process a multicomponent
Name in which the first component is a URL.
Treat the first component like a junction: resolve it and then use
DirectoryManager.getContinuationDirContext() to get the target context in
which to operate on the remainder of the name (n.getSuffix(1)).
Do this in case intermediate contexts are not DirContext.
/**
     * Gets the context in which to continue the operation. This method
     * is called when this context is asked to process a multicomponent
     * Name in which the first component is a URL.
     * Treat the first component like a junction: resolve it and then use
     * DirectoryManager.getContinuationDirContext() to get the target context in
     * which to operate on the remainder of the name (n.getSuffix(1)).
     * Do this in case intermediate contexts are not DirContext.
     */
    protected DirContext getContinuationDirContext(Name n) throws NamingException {
        Object obj = lookup(n.get(0));
        CannotProceedException cpe = new CannotProceedException();
        cpe.setResolvedObj(obj);
        cpe.setEnvironment(myEnv);
        return DirectoryManager.getContinuationDirContext(cpe);
    }


    public Attributes getAttributes(String name) throws NamingException {
        ResolveResult res = getRootURLContext(name, myEnv);
        DirContext ctx = (DirContext)res.getResolvedObj();
        try {
            return ctx.getAttributes(res.getRemainingName());
        } finally {
            ctx.close();
        }
    }

    public Attributes getAttributes(Name name) throws NamingException  {
        if (name.size() == 1) {
            return getAttributes(name.get(0));
        } else {
            DirContext ctx = getContinuationDirContext(name);
            try {
                return ctx.getAttributes(name.getSuffix(1));
            } finally {
                ctx.close();
            }
        }
    }

    public Attributes getAttributes(String name, String[] attrIds)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                return ctx.getAttributes(res.getRemainingName(), attrIds);
            } finally {
                ctx.close();
            }
    }

    public Attributes getAttributes(Name name, String[] attrIds)
        throws NamingException {
            if (name.size() == 1) {
                return getAttributes(name.get(0), attrIds);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    return ctx.getAttributes(name.getSuffix(1), attrIds);
                } finally {
                    ctx.close();
                }
            }
    }

    public void modifyAttributes(String name, int mod_op, Attributes attrs)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                ctx.modifyAttributes(res.getRemainingName(), mod_op, attrs);
            } finally {
                ctx.close();
            }
    }

    public void modifyAttributes(Name name, int mod_op, Attributes attrs)
        throws NamingException {
            if (name.size() == 1) {
                modifyAttributes(name.get(0), mod_op, attrs);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    ctx.modifyAttributes(name.getSuffix(1), mod_op, attrs);
                } finally {
                    ctx.close();
                }
            }
    }

    public void modifyAttributes(String name, ModificationItem[] mods)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                ctx.modifyAttributes(res.getRemainingName(), mods);
            } finally {
                ctx.close();
            }
    }

    public void modifyAttributes(Name name, ModificationItem[] mods)
        throws NamingException  {
            if (name.size() == 1) {
                modifyAttributes(name.get(0), mods);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    ctx.modifyAttributes(name.getSuffix(1), mods);
                } finally {
                    ctx.close();
                }
            }
    }

    public void bind(String name, Object obj, Attributes attrs)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                ctx.bind(res.getRemainingName(), obj, attrs);
            } finally {
                ctx.close();
            }
    }

    public void bind(Name name, Object obj, Attributes attrs)
        throws NamingException {
            if (name.size() == 1) {
                bind(name.get(0), obj, attrs);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    ctx.bind(name.getSuffix(1), obj, attrs);
                } finally {
                    ctx.close();
                }
            }
    }

    public void rebind(String name, Object obj, Attributes attrs)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                ctx.rebind(res.getRemainingName(), obj, attrs);
            } finally {
                ctx.close();
            }
    }

    public void rebind(Name name, Object obj, Attributes attrs)
        throws NamingException {
            if (name.size() == 1) {
                rebind(name.get(0), obj, attrs);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    ctx.rebind(name.getSuffix(1), obj, attrs);
                } finally {
                    ctx.close();
                }
            }
    }

    public DirContext createSubcontext(String name, Attributes attrs)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                return ctx.createSubcontext(res.getRemainingName(), attrs);
            } finally {
                ctx.close();
            }
    }

    public DirContext createSubcontext(Name name, Attributes attrs)
        throws NamingException {
            if (name.size() == 1) {
                return createSubcontext(name.get(0), attrs);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    return ctx.createSubcontext(name.getSuffix(1), attrs);
                } finally {
                    ctx.close();
                }
            }
    }

    public DirContext getSchema(String name) throws NamingException {
        ResolveResult res = getRootURLContext(name, myEnv);
        DirContext ctx = (DirContext)res.getResolvedObj();
        return ctx.getSchema(res.getRemainingName());
    }

    public DirContext getSchema(Name name) throws NamingException {
        if (name.size() == 1) {
            return getSchema(name.get(0));
        } else {
            DirContext ctx = getContinuationDirContext(name);
            try {
                return ctx.getSchema(name.getSuffix(1));
            } finally {
                ctx.close();
            }
        }
    }

    public DirContext getSchemaClassDefinition(String name)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                return ctx.getSchemaClassDefinition(res.getRemainingName());
            } finally {
                ctx.close();
            }
    }

    public DirContext getSchemaClassDefinition(Name name)
        throws NamingException {
            if (name.size() == 1) {
                return getSchemaClassDefinition(name.get(0));
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    return ctx.getSchemaClassDefinition(name.getSuffix(1));
                } finally {
                    ctx.close();
                }
            }
    }

    public NamingEnumeration<SearchResult> search(String name,
        Attributes matchingAttributes)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                return ctx.search(res.getRemainingName(), matchingAttributes);
            } finally {
                ctx.close();
            }
    }

    public NamingEnumeration<SearchResult> search(Name name,
        Attributes matchingAttributes)
        throws NamingException {
            if (name.size() == 1) {
                return search(name.get(0), matchingAttributes);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    return ctx.search(name.getSuffix(1), matchingAttributes);
                } finally {
                    ctx.close();
                }
            }
    }

    public NamingEnumeration<SearchResult> search(String name,
        Attributes matchingAttributes,
        String[] attributesToReturn)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                return ctx.search(res.getRemainingName(),
                    matchingAttributes, attributesToReturn);
            } finally {
                ctx.close();
            }
    }

    public NamingEnumeration<SearchResult> search(Name name,
        Attributes matchingAttributes,
        String[] attributesToReturn)
        throws NamingException {
            if (name.size() == 1) {
                return search(name.get(0), matchingAttributes,
                    attributesToReturn);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    return ctx.search(name.getSuffix(1),
                        matchingAttributes, attributesToReturn);
                } finally {
                    ctx.close();
                }
            }
    }

    public NamingEnumeration<SearchResult> search(String name,
        String filter,
        SearchControls cons)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                return ctx.search(res.getRemainingName(), filter, cons);
            } finally {
                ctx.close();
            }
    }

    public NamingEnumeration<SearchResult> search(Name name,
        String filter,
        SearchControls cons)
        throws NamingException {
            if (name.size() == 1) {
                return search(name.get(0), filter, cons);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                    return ctx.search(name.getSuffix(1), filter, cons);
                } finally {
                    ctx.close();
                }
            }
    }

    public NamingEnumeration<SearchResult> search(String name,
        String filterExpr,
        Object[] filterArgs,
        SearchControls cons)
        throws NamingException {
            ResolveResult res = getRootURLContext(name, myEnv);
            DirContext ctx = (DirContext)res.getResolvedObj();
            try {
                return
                    ctx.search(res.getRemainingName(), filterExpr, filterArgs, cons);
            } finally {
                ctx.close();
            }
    }

    public NamingEnumeration<SearchResult> search(Name name,
        String filterExpr,
        Object[] filterArgs,
        SearchControls cons)
        throws NamingException {
            if (name.size() == 1) {
                return search(name.get(0), filterExpr, filterArgs, cons);
            } else {
                DirContext ctx = getContinuationDirContext(name);
                try {
                return ctx.search(name.getSuffix(1), filterExpr, filterArgs, cons);
                } finally {
                    ctx.close();
                }
            }
    }
}