remoteproperty.java

jsr170接口的java实现。是个apache的开源项目。

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.jackrabbit.rmi.remote;

import java.rmi.RemoteException;

import javax.jcr.RepositoryException;
import javax.jcr.Value;

/**
 * Remote version of the JCR {@link javax.jcr.Property Property} interface.
 * Used by the
 * {@link org.apache.jackrabbit.rmi.server.ServerProperty ServerProperty}
 * and {@link org.apache.jackrabbit.rmi.client.ClientProperty ClientProperty}
 * adapters to provide transparent RMI access to remote properties.
 * <p>
 * The methods in this interface are documented only with a reference
 * to a corresponding Property method. The remote object will simply forward
 * the method call to the underlying Property instance. Argument and return
 * values, as well as possible exceptions, are copied over the network.
 * Compex {@link javax.jcr.nodetype.PropertyDefinition PropertyDef} return values
 * are returned as remote references to the corresponding
 * {@link org.apache.jackrabbit.rmi.remote.RemotePropertyDefinition RemotePropertyDefinition}
 * interface. RMI errors are signalled with RemoteExceptions.
 * <p>
 * Note that only the generic getValue and setValue methods are included
 * in this interface. Clients should implement the type-specific value
 * getters and setters wrapping using the generic methods. Note also that the
 * Value objects must be serializable and implemented using classes
 * available on both the client and server side. The
 * {@link org.apache.jackrabbit.rmi.value.SerialValueFactory SerialValueFactory}
 * class provides two convenience methods to satisfy these requirements.
 *
 * @author Jukka Zitting
 * @see javax.jcr.Property
 * @see org.apache.jackrabbit.rmi.client.ClientProperty
 * @see org.apache.jackrabbit.rmi.server.ServerProperty
 */
public interface RemoteProperty extends RemoteItem {

    /**
     * Remote version of the
     * {@link javax.jcr.Property#getValue() Property.getValue()} method.
     *
     * @return property value
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    Value getValue() throws RepositoryException, RemoteException;

    /**
     * Remote version of the
     * {@link javax.jcr.Property#getValues() Property.getValues()} method.
     *
     * @return property values
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    Value[] getValues() throws RepositoryException, RemoteException;

    /**
     * Remote version of the
     * {@link javax.jcr.Property#setValue(Value) Property.setValue(Value)}
     * method.
     *
     * @param value property value
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    void setValue(Value value) throws RepositoryException, RemoteException;

    /**
     * Remote version of the
     * {@link javax.jcr.Property#setValue(Value[]) Property.setValue(Value[])}
     * method.
     *
     * @param values property values
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    void setValue(Value[] values) throws RepositoryException, RemoteException;

    /**
     * Remote version of the
     * {@link javax.jcr.Property#getLength() Property.getLength()}
     * method.
     *
     * @return value length
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    long getLength() throws RepositoryException, RemoteException;

    /**
     * Remote version of the
     * {@link javax.jcr.Property#getLengths() Property.getLengths()}
     * method.
     *
     * @return value lengths
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    long[] getLengths() throws RepositoryException, RemoteException;

    /**
     * Remote version of the
     * {@link javax.jcr.Property#getDefinition() Property.getDefinition()}
     * method.
     *
     * @return property definition
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    RemotePropertyDefinition getDefinition()
            throws RepositoryException, RemoteException;

    /**
     * Remote version of the
     * {@link javax.jcr.Property#getType() Property.getType()} method.
     *
     * @return property type
     * @throws RepositoryException on repository errors
     * @throws RemoteException on RMI errors
     */
    int getType() throws RepositoryException, RemoteException;

}