PropertyAutoCompleteFacetMethodFactory.java

/*
 *  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
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 *  specific language governing permissions and limitations
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package org.apache.isis.core.metamodel.facets.properties.autocomplete.method;

import java.lang.reflect.Method;

import org.apache.isis.core.commons.lang.StringExtensions;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facetapi.FacetUtil;
import org.apache.isis.core.metamodel.facetapi.FeatureType;
import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
import org.apache.isis.core.metamodel.methodutils.MethodScope;
import org.apache.isis.core.metamodel.services.ServicesInjector;
import org.apache.isis.core.metamodel.services.persistsession.PersistenceSessionServiceInternal;

public class PropertyAutoCompleteFacetMethodFactory extends MethodPrefixBasedFacetFactoryAbstract {

    private static final String[] PREFIXES = { MethodPrefixConstants.AUTO_COMPLETE_PREFIX };


    public PropertyAutoCompleteFacetMethodFactory() {
        super(FeatureType.PROPERTIES_ONLY, OrphanValidation.VALIDATE, PREFIXES);
    }

    @Override
    public void process(final ProcessMethodContext processMethodContext) {

        attachPropertyAutoCompleteFacetIfChoicesMethodIsFound(processMethodContext);
    }

    private void attachPropertyAutoCompleteFacetIfChoicesMethodIsFound(final ProcessMethodContext processMethodContext) {

        final Method getMethod = processMethodContext.getMethod();
        final String capitalizedName = StringExtensions.asJavaBaseName(getMethod.getName());

        final Class<?> cls = processMethodContext.getCls();
        final Class<?> returnType = getMethod.getReturnType();
        final Method autoCompleteMethod = MethodFinderUtils.findMethod(cls, MethodScope.OBJECT, MethodPrefixConstants.AUTO_COMPLETE_PREFIX + capitalizedName, (Class<?>)null, new Class[]{String.class});
        if (autoCompleteMethod == null) {
            return;
        }
        processMethodContext.removeMethod(autoCompleteMethod);

        final FacetHolder property = processMethodContext.getFacetHolder();
        FacetUtil.addFacet(new PropertyAutoCompleteFacetMethod(autoCompleteMethod, returnType, property,
                getDeploymentCategory(), getSpecificationLoader(), getAuthenticationSessionProvider(), adapterManager
        ));
    }

    // ///////////////////////////////////////////////////////
    // Dependencies (injected)
    // ///////////////////////////////////////////////////////


    @Override
    public void setServicesInjector(final ServicesInjector servicesInjector) {
        super.setServicesInjector(servicesInjector);
        adapterManager = servicesInjector.getPersistenceSessionServiceInternal();
    }

    PersistenceSessionServiceInternal adapterManager;

}