com.textocat.textokit.resource.SpringResourceLocator.java Source code

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Here is the source code for com.textocat.textokit.resource.SpringResourceLocator.java

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/*
 *    Copyright 2015 Textocat
 *
 *    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.textocat.textokit.resource;

import com.textocat.textokit.commons.util.UimaResourceUtils;
import org.apache.uima.fit.component.Resource_ImplBase;
import org.apache.uima.fit.descriptor.ConfigurationParameter;
import org.apache.uima.fit.descriptor.ExternalResourceLocator;
import org.apache.uima.resource.ResourceInitializationException;
import org.apache.uima.resource.ResourceSpecifier;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;

import java.io.File;
import java.util.Map;

import static java.lang.String.format;

/**
 * @author Rinat Gareev
 */
public abstract class SpringResourceLocator extends Resource_ImplBase implements ExternalResourceLocator {

    public static final String PARAM_RESOURCE_LOCATION = "resourceLocation";

    // config fields
    @ConfigurationParameter(name = PARAM_RESOURCE_LOCATION)
    private String resourceLocation;
    private DefaultResourceLoader resourceLoader = new DefaultResourceLoader();
    // state fields
    protected Resource resourceMeta;

    @Override
    public boolean initialize(ResourceSpecifier aSpecifier, Map<String, Object> aAdditionalParams)
            throws ResourceInitializationException {
        if (!super.initialize(aSpecifier, aAdditionalParams))
            return false;
        //
        resourceMeta = resourceLoader.getResource(resourceLocation);
        if (resourceMeta == null) {
            throw new IllegalStateException(format("Can't wrap path %s into Resource", resourceLocation));
        }
        if (!resourceMeta.exists()) {
            // try to resolve against UIMA datapath
            try {
                File resourceFile = resourceMeta.getFile();
                resourceFile = UimaResourceUtils.resolveFile(resourceFile.getPath(), getResourceManager());
                resourceMeta = new FileSystemResource(resourceFile);
            } catch (Exception e) {
                throw new ResourceInitializationException(e);
            }
        }
        return true;
    }

}