/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2012-2016 ForgeRock AS.
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*/
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package org.forgerock.opendj.rest2ldap;
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import java.util.List;
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import java.util.Set;
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import org.forgerock.json.JsonPointer;
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import org.forgerock.json.JsonValue;
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import org.forgerock.json.resource.PatchOperation;
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import org.forgerock.json.resource.ResourceException;
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import org.forgerock.opendj.ldap.Attribute;
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import org.forgerock.opendj.ldap.Entry;
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import org.forgerock.opendj.ldap.Filter;
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import org.forgerock.opendj.ldap.Modification;
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import org.forgerock.services.context.Context;
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import org.forgerock.util.promise.Promise;
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/** An property mapper is responsible for converting JSON values to and from LDAP attributes. */
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public abstract class PropertyMapper {
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/*
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* This interface is an abstract class so that methods can be made package
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* private until API is finalized.
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*/
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PropertyMapper() {
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// Nothing to do.
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}
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/**
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* Maps a JSON value to one or more LDAP attributes, returning a promise
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* once the transformation has completed. This method is invoked when a REST
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* resource is created using a create request.
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* <p>
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* If the JSON value corresponding to this mapper is not present in the
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* resource then this method will be invoked with a value of {@code null}.
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* It is the responsibility of the mapper implementation to take appropriate
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* action in this case, perhaps by substituting default LDAP values, or by
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* returning a failed promise with an appropriate {@link ResourceException}.
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*
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* @param context The request context.
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* @param resource The exact type of resource being created.
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* @param path
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* The pointer from the root of the JSON resource to this
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* property mapper. This may be used when constructing error
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* messages.
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* @param v
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* The JSON value to be converted to LDAP attributes, which may
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* be {@code null} indicating that the JSON value was not present
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* in the resource.
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* @return A {@link Promise} containing the result of the operation.
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*/
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abstract Promise<List<Attribute>, ResourceException> create(Context context, Resource resource,
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JsonPointer path, JsonValue v);
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/**
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* Adds the names of the LDAP attributes required by this property mapper
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* to the provided set.
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* <p>
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* Implementations should only add the names of attributes found in the LDAP
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* entry directly associated with the resource.
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*
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* @param path
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* The pointer from the root of the JSON resource to this
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* property mapper. This may be used when constructing error
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* messages.
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* @param subPath
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* The targeted JSON field relative to this property mapper, or
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* root if all attributes associated with this mapper have been
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* targeted.
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* @param ldapAttributes
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* The set into which the required LDAP attribute names should be
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*/
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abstract void getLdapAttributes(JsonPointer path, JsonPointer subPath, Set<String> ldapAttributes);
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/**
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* Transforms the provided REST comparison filter parameters to an LDAP
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* filter representation, returning a promise once the transformation has
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* completed.
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* <p>
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* If an error occurred while constructing the LDAP filter, then a failed
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* promise must be returned with an appropriate {@link ResourceException}
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* indicating the problem which occurred.
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*
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* @param context The request context.
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* @param resource The type of resource being queried.
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* @param path
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* The pointer from the root of the JSON resource to this
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* property mapper. This may be used when constructing error
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* messages.
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* @param subPath
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* The targeted JSON field relative to this property mapper, or
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* root if all attributes associated with this mapper have been
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* targeted.
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* @param type
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* The type of REST comparison filter.
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* @param operator
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* The name of the extended operator to use for the comparison,
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* or {@code null} if {@code type} is not
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* {@link FilterType#EXTENDED}.
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* @param valueAssertion
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* The value assertion, or {@code null} if {@code type} is
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* {@link FilterType#PRESENT}.
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* @return A {@link Promise} containing the result of the operation.
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*/
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abstract Promise<Filter, ResourceException> getLdapFilter(Context context, Resource resource,
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JsonPointer path, JsonPointer subPath, FilterType type,
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String operator, Object valueAssertion);
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/**
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* Maps a JSON patch operation to one or more LDAP modifications, returning
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* a promise once the transformation has completed. This method is invoked
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* when a REST resource is modified using a patch request.
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*
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* @param context The request context.
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* @param resource The exact type of resource being patched.
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* @param path
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* The pointer from the root of the JSON resource to this
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* property mapper. This may be used when constructing error
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* messages.
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* @param operation
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* The JSON patch operation to be converted to LDAP
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* modifications. The targeted JSON field will be relative to
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* this property mapper, or root if all attributes associated
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* with this mapper have been targeted.
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* @return A {@link Promise} containing the result of the operation.
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*/
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abstract Promise<List<Modification>, ResourceException> patch(Context context, Resource resource,
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JsonPointer path, PatchOperation operation);
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/**
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* Maps one or more LDAP attributes to their JSON representation, returning
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* a promise once the transformation has completed.
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* <p>
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* This method is invoked whenever an LDAP entry is converted to a REST
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* resource, i.e. when responding to read, query, create, put, or patch
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* requests.
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* <p>
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* If the LDAP attributes are not present in the entry, perhaps because they
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* are optional, then implementations should return a successful promise
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* with a result of {@code null}. If the LDAP attributes cannot be mapped
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* for any other reason, perhaps because they are required but missing, or
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* they contain unexpected content, then a failed promise must be returned
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* with an appropriate exception indicating the problem which occurred.
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*
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* @param context The request context.
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* @param resource The exact type of resource being read.
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* @param path
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* The pointer from the root of the JSON resource to this
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* property mapper. This may be used when constructing error
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* messages.
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* @param e
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* The LDAP entry to be converted to JSON.
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* @return A {@link Promise} containing the result of the operation.
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*/
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abstract Promise<JsonValue, ResourceException> read(Context context, Resource resource,
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JsonPointer path, Entry e);
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/**
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* Maps a JSON value to one or more LDAP modifications, returning a promise
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* once the transformation has completed. This method is invoked when a REST
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* resource is modified using an update request.
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* <p>
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* If the JSON value corresponding to this mapper is not present in the
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* resource then this method will be invoked with a value of {@code null}.
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* It is the responsibility of the mapper implementation to take appropriate
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* action in this case, perhaps by substituting default LDAP values, or by
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* returning a failed promise with an appropriate {@link ResourceException}.
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*
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* @param context The request context.
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* @param resource The exact type of resource being updated.
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* @param v
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* The JSON value to be converted to LDAP attributes, which may
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* be {@code null} indicating that the JSON value was not present
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* in the resource.
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* @return A {@link Promise} containing the result of the operation.
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*/
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abstract Promise<List<Modification>, ResourceException> update(Context context, Resource resource,
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JsonPointer path, Entry e, JsonValue v);
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// TODO: methods for obtaining schema information (e.g. name, description, type information).
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// TODO: methods for creating sort controls.
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}
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