org.wte4j.impl.SpringTemplateEngine.java Source code

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Here is the source code for org.wte4j.impl.SpringTemplateEngine.java

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/**
 * Copyright (C) 2015 Born Informatik AG (www.born.ch)
 *
 * 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 org.wte4j.impl;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.wte4j.InvalidTemplateException;
import org.wte4j.Template;
import org.wte4j.TemplateBuilder;
import org.wte4j.TemplateEngine;
import org.wte4j.TemplateFile;
import org.wte4j.TemplateRepository;
import org.wte4j.WteException;
import org.wte4j.WteModelService;
import org.wte4j.impl.word.WordTemplateFile;

@Service("wordTemplateEngine")
public class SpringTemplateEngine implements TemplateEngine {

    @Autowired(required = false)
    protected TemplateRepository templateRepository;

    @Autowired(required = false)
    @Qualifier("wteModelService")
    protected WteModelService modelService;

    @Autowired
    protected TemplateContextFactory contextFactory;

    @Override
    public <E> TemplateBuilder<E> getTemplateBuilder(Class<E> inputType) {
        if (modelService == null) {
            throw new WteException("no bean with qualifier wteModelService of type "
                    + WteModelService.class.getName() + " is defined");
        }
        return new WordTemplateBuilder<E>(contextFactory, modelService, inputType);
    }

    @Override
    public Path createDocument(String documentName, String language, Object data)
            throws IllegalArgumentException, InvalidTemplateException, IOException {
        Template<Object> template = getTemplateRepository().getTemplate(documentName, language);
        if (template == null) {
            throw new IllegalArgumentException("Template does not exists for document \"" + documentName
                    + "\" with the given language " + language);
        }
        return createFile(template, data);
    }

    Path createFile(Template<Object> template, Object data) throws IOException {
        File tempFile = File.createTempFile(template.getDocumentName(), ".docx");
        try (OutputStream out = Files.newOutputStream(tempFile.toPath())) {
            template.toDocument(data, out);
            return tempFile.toPath();
        }
    }

    @Override
    public TemplateRepository getTemplateRepository() {
        if (templateRepository == null) {
            throw new IllegalStateException("repository not defined in spring context");
        }
        return templateRepository;
    }

    @Override
    public TemplateFile asTemplateFile(Path aFile) throws IOException {
        try (InputStream in = Files.newInputStream(aFile)) {

            WordTemplateFile templateFile = new WordTemplateFile(in);
            return templateFile;
        }
    }
}