Receipts.java example

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billy-master
/**
 * Copyright (C) 2013 Premium Minds.
 *
 * This file is part of billy spain (ES Pack).
 *
 * billy spain (ES Pack) is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version.
 *
 * billy spain (ES Pack) is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with billy spain (ES Pack). If not, see <http://www.gnu.org/licenses/>.
 */
package com.premiumminds.billy.spain.util;

import java.io.InputStream;

import com.google.inject.Injector;
import com.premiumminds.billy.core.services.builders.impl.BuilderManager;
import com.premiumminds.billy.core.services.documents.DocumentIssuingService;
import com.premiumminds.billy.core.services.exceptions.DocumentIssuingException;
import com.premiumminds.billy.gin.services.ExportService;
import com.premiumminds.billy.gin.services.exceptions.ExportServiceException;
import com.premiumminds.billy.spain.persistence.entities.ESReceiptEntity;
import com.premiumminds.billy.spain.services.documents.ESReceiptIssuingHandler;
import com.premiumminds.billy.spain.services.documents.util.ESIssuingParams;
import com.premiumminds.billy.spain.services.entities.ESReceipt;
import com.premiumminds.billy.spain.services.entities.ESReceiptEntry;
import com.premiumminds.billy.spain.services.export.pdf.receipt.ESReceiptPDFExportHandler;
import com.premiumminds.billy.spain.services.export.pdf.receipt.ESReceiptPDFExportRequest;
import com.premiumminds.billy.spain.services.persistence.ESReceiptPersistenceService;

public class Receipts {
	private final Injector injector;
	private final ESReceiptPersistenceService persistenceService;
	private final DocumentIssuingService issuingService;
	private final ExportService exportService;

	public Receipts(Injector injector) {
		this.injector = injector;
		this.persistenceService = getInstance(ESReceiptPersistenceService.class);
		this.issuingService = getInstance(DocumentIssuingService.class);
		this.issuingService.addHandler(ESReceiptEntity.class
				, getInstance(ESReceiptIssuingHandler.class));
		this.exportService = getInstance(ExportService.class);
		this.exportService.addHandler(ESReceiptPDFExportRequest.class
				, getInstance(ESReceiptPDFExportHandler.class));
	}
	
	public ESReceipt.Builder builder() {
		return getInstance(ESReceipt.Builder.class);
	}
	
	public ESReceipt.Builder builder(ESReceipt receipt) {
		ESReceipt.Builder builder = getInstance(ESReceipt.Builder.class);
		BuilderManager.setTypeInstance(builder, receipt);
		return builder;
	}
	
	public ESReceiptEntry.Builder entryBuilder() {
		return getInstance(ESReceiptEntry.Builder.class);
	}
	
	public ESReceiptEntry.Builder entryBuilder(ESReceiptEntry entry) {
		ESReceiptEntry.Builder builder = getInstance(ESReceiptEntry.Builder.class);
		BuilderManager.setTypeInstance(builder, entry);
		return builder;
	}
	
	public ESReceiptPersistenceService persistence() {
		return this.persistenceService;
	}
	
	public ESReceipt issue(ESReceipt.Builder builder, ESIssuingParams params) 
			throws DocumentIssuingException {
		return this.issuingService.issue(builder, params);
	}
	
	public InputStream pdfExport(ESReceiptPDFExportRequest request) 
			throws ExportServiceException {
		return this.exportService.exportToStream(request);
	}
	
	private <T> T getInstance(Class<T> clazz) {
		return this.injector.getInstance(clazz);
	}
}