/*
* 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.isis.core.metamodel.facets.param.autocomplete.method;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.List;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import org.apache.isis.core.commons.authentication.AuthenticationSessionProvider;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.adapter.mgr.AdapterManager;
import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
import org.apache.isis.core.metamodel.deployment.DeploymentCategory;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facets.CollectionUtils;
import org.apache.isis.core.metamodel.facets.FacetedMethodParameter;
import org.apache.isis.core.metamodel.facets.ImperativeFacet;
import org.apache.isis.core.metamodel.facets.param.autocomplete.ActionParameterAutoCompleteFacetAbstract;
import org.apache.isis.core.metamodel.facets.param.autocomplete.MinLengthUtil;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
import org.apache.isis.core.metamodel.specloader.SpecificationLoader;
public class ActionParameterAutoCompleteFacetViaMethod extends ActionParameterAutoCompleteFacetAbstract implements ImperativeFacet {
private final Method method;
private final Class<?> choicesType;
private final int minLength;
public ActionParameterAutoCompleteFacetViaMethod(
final Method method,
final Class<?> choicesType,
final FacetHolder holder,
final DeploymentCategory deploymentCategory,
final SpecificationLoader specificationLookup,
final AuthenticationSessionProvider authenticationSessionProvider,
final AdapterManager adapterManager) {
super(holder, deploymentCategory, specificationLookup, authenticationSessionProvider, adapterManager);
this.method = method;
this.choicesType = choicesType;
this.minLength = MinLengthUtil.determineMinLength(method);
}
/**
* Returns a singleton list of the {@link Method} provided in the
* constructor.
*/
@Override
public List<Method> getMethods() {
return Collections.singletonList(method);
}
@Override
public Intent getIntent(final Method method) {
return Intent.CHOICES_OR_AUTOCOMPLETE;
}
@Override
public int getMinLength() {
return minLength;
}
@Override
public Object[] autoComplete(
final ObjectAdapter owningAdapter,
final String searchArg,
final InteractionInitiatedBy interactionInitiatedBy) {
final Object collectionOrArray = ObjectAdapter.InvokeUtils.invoke(method, owningAdapter, searchArg);
if (collectionOrArray == null) {
return new Object[0];
}
final ObjectAdapter collectionAdapter = getAdapterManager().adapterFor(collectionOrArray);
final FacetedMethodParameter facetedMethodParameter = (FacetedMethodParameter) getFacetHolder();
final Class<?> parameterType = facetedMethodParameter.getType();
final List<ObjectAdapter> visibleAdapters =
ObjectAdapter.Util.visibleAdapters(
collectionAdapter,
interactionInitiatedBy);
final List<Object> visibleObjects = Lists.newArrayList(
Iterables.transform(visibleAdapters, ObjectAdapter.Functions.getObject()));
final ObjectSpecification parameterSpec = getSpecification(parameterType);
return CollectionUtils.getCollectionAsObjectArray(visibleObjects, parameterSpec, getAdapterManager());
}
@Override
protected String toStringValues() {
return "method=" + method + ",type=" + choicesType;
}
}