com.fredhopper.connector.index.provider.SpringProviderResolver.java Source code

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/*******************************************************************************
 * Copyright 2016 Fredhopper B.V.
 *
 * Licensed 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 com.fredhopper.connector.index.provider;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import com.fredhopper.connector.config.data.IndexConfig;
import com.fredhopper.connector.config.data.MetaAttributeData;

/**
 * Spring implementation of {@link ProviderResolver}
 */
public class SpringProviderResolver implements ProviderResolver, ApplicationContextAware {
    private ApplicationContext applicationContext;
    private AttributeProvider defaultAttributeProvider;

    @Override
    public Map<MetaAttributeData, AttributeProvider> resolveVariantProviders(final IndexConfig indexConfig) {

        final List<MetaAttributeData> attributes = indexConfig.getVariantMetaAttributes();

        final Map<MetaAttributeData, AttributeProvider> providers = new HashMap<>();
        for (final MetaAttributeData attribute : attributes) {
            providers.put(attribute, resolveProvider(attribute));
        }
        return providers;
    }

    @Override
    public Map<MetaAttributeData, AttributeProvider> resolveBaseProviders(final IndexConfig indexConfig) {

        final List<MetaAttributeData> attributes = indexConfig.getBaseMetaAttributes();

        final Map<MetaAttributeData, AttributeProvider> providers = new HashMap<>();
        for (final MetaAttributeData attribute : attributes) {
            providers.put(attribute, resolveProvider(attribute));
        }
        return providers;
    }

    protected AttributeProvider resolveProvider(final MetaAttributeData attribute) {
        if (!StringUtils.isEmpty(attribute.getProvider())) {
            return (AttributeProvider) applicationContext.getBean(attribute.getProvider());

        } else {
            return defaultAttributeProvider;
        }

    }

    @Override
    public void setApplicationContext(final ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;

    }

    public AttributeProvider getDefaultAttributeProvider() {
        return defaultAttributeProvider;
    }

    public void setDefaultAttributeProvider(final AttributeProvider defaultAttributeProvider) {
        this.defaultAttributeProvider = defaultAttributeProvider;
    }

}