001/**
002 *  Licensed to the Apache Software Foundation (ASF) under one or more
003 *  contributor license agreements.  See the NOTICE file distributed with
004 *  this work for additional information regarding copyright ownership.
005 *  The ASF licenses this file to You under the Apache License, Version 2.0
006 *  (the "License"); you may not use this file except in compliance with
007 *  the License.  You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 */
017package org.apache.isis.viewer.restfulobjects.rendering.domainobjects;
018
019import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
020import org.apache.isis.core.metamodel.adapter.oid.OidMarshaller;
021import org.apache.isis.core.metamodel.spec.feature.ObjectMember;
022import org.apache.isis.core.runtime.system.context.IsisContext;
023import org.apache.isis.viewer.restfulobjects.applib.Rel;
024import org.apache.isis.viewer.restfulobjects.applib.RepresentationType;
025import org.apache.isis.viewer.restfulobjects.rendering.LinkBuilder;
026import org.apache.isis.viewer.restfulobjects.rendering.RendererContext;
027import org.apache.isis.viewer.restfulobjects.rendering.util.OidUtils;
028
029public class DomainObjectLinkTo implements ObjectAdapterLinkTo {
030
031    protected RendererContext rendererContext;
032    protected ObjectAdapter objectAdapter;
033
034    @Override
035    public final DomainObjectLinkTo usingUrlBase(final RendererContext resourceContext) {
036        this.rendererContext = resourceContext;
037        return this;
038    }
039
040    @Override
041    public ObjectAdapterLinkTo with(final ObjectAdapter objectAdapter) {
042        this.objectAdapter = objectAdapter;
043        return this;
044    }
045
046    @Override
047    public LinkBuilder builder() {
048        return builder(null);
049    }
050
051    @Override
052    public LinkBuilder builder(final Rel rel) {
053        final LinkBuilder linkBuilder = LinkBuilder.newBuilder(rendererContext, relElseDefault(rel).getName(), RepresentationType.DOMAIN_OBJECT, linkRef(new StringBuilder()).toString());
054        linkBuilder.withTitle(objectAdapter.titleString());
055        return linkBuilder;
056    }
057
058    /**
059     * hook method
060     */
061    protected StringBuilder linkRef(StringBuilder buf) {
062        String domainType = OidUtils.getDomainType(objectAdapter);
063        String instanceId = OidUtils.getInstanceId(rendererContext, objectAdapter);
064        return buf.append("objects/").append(domainType).append("/").append(instanceId);
065    }
066
067    protected Rel relElseDefault(final Rel rel) {
068        return rel != null ? rel : defaultRel();
069    }
070
071    /**
072     * hook method; used by {@link #builder(Rel)}.
073     */
074    protected Rel defaultRel() {
075        return Rel.VALUE;
076    }
077
078    @Override
079    public final LinkBuilder memberBuilder(final Rel rel, final MemberType memberType, final ObjectMember objectMember, final String... parts) {
080        return memberBuilder(rel, memberType, objectMember, memberType.getRepresentationType(), parts);
081    }
082
083    @Override
084    public final LinkBuilder memberBuilder(final Rel rel, final MemberType memberType, final ObjectMember objectMember, final RepresentationType representationType, final String... parts) {
085        final StringBuilder buf = linkRef(new StringBuilder());
086        buf.append("/").append(memberType.getUrlPart()).append(objectMember.getId());
087        for (final String part : parts) {
088            if (part == null) {
089                continue;
090            }
091            buf.append("/").append(part);
092        }
093        final String url = buf.toString();
094        return LinkBuilder.newBuilder(rendererContext, rel.getName(), representationType, url);
095    }
096
097
098    
099    //////////////////////////////////////////////////
100    // Dependencies (from context)
101    //////////////////////////////////////////////////
102    
103    protected static OidMarshaller getOidMarshaller() {
104        return IsisContext.getOidMarshaller();
105    }
106
107
108}