Java tutorial
/******************************************************************************* * Copyright (c) 2009 Composent, Inc. and others. All rights reserved. This * program and the accompanying materials are made available under the terms of * the Eclipse Public License v1.0 which accompanies this distribution, and is * available at http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Composent, Inc. - initial API and implementation ******************************************************************************/ package org.eclipse.ecf.remoteservice.rest.client; import java.io.*; import java.util.Map; import org.apache.commons.httpclient.methods.*; import org.eclipse.ecf.remoteservice.IRemoteCall; import org.eclipse.ecf.remoteservice.client.IRemoteCallParameter; import org.eclipse.ecf.remoteservice.client.IRemoteCallable; public abstract class AbstractEntityRequestType extends AbstractRequestType { public static final int NO_REQUEST_ENTITY = -1; public static final int INPUT_STREAM_REQUEST_ENTITY = 0; public static final int STRING_REQUEST_ENTITY = 1; public static final int BYTEARRAY_REQUEST_ENTITY = 2; public static final int FILE_REQUEST_ENTITY = 3; public static final String CHARSET_PARAM_NAME = "charset"; //$NON-NLS-1$ public static final String CONTENT_TYPE_PARAM_NAME = "contentType"; //$NON-NLS-1$ public static final String CONTENT_LENGTH_PARAM_NAME = "contentLength"; //$NON-NLS-1$ protected int requestEntityType = NO_REQUEST_ENTITY; protected long defaultContentLength = InputStreamRequestEntity.CONTENT_LENGTH_AUTO; protected String defaultContentType = null; protected String defaultCharset = null; public AbstractEntityRequestType(int requestEntityType, String defaultContentType, long defaultContentLength, String defaultCharset, Map defaultRequestHeaders) { super(defaultRequestHeaders); this.requestEntityType = requestEntityType; this.defaultContentType = defaultContentType; this.defaultContentLength = defaultContentLength; this.defaultCharset = defaultCharset; } public AbstractEntityRequestType(int requestEntityType, String defaultContentType, long defaultContentLength, String defaultCharset) { this(requestEntityType, defaultContentType, defaultContentLength, defaultCharset, null); } public AbstractEntityRequestType(int requestEntityType, String defaultContentType, long defaultContentLength, Map defaultRequestHeaders) { this(requestEntityType, defaultContentType, defaultContentLength, null, defaultRequestHeaders); } public AbstractEntityRequestType(int requestEntityType, String defaultContentType, long defaultContentLength) { this(requestEntityType, defaultContentType, defaultContentLength, (String) null); } public AbstractEntityRequestType(int requestEntityType, String defaultContentType, Map defaultRequestHeaders) { this(requestEntityType, defaultContentType, InputStreamRequestEntity.CONTENT_LENGTH_AUTO, null, defaultRequestHeaders); } public AbstractEntityRequestType(int requestEntityType, String defaultContentType) { this(requestEntityType, defaultContentType, null); } public AbstractEntityRequestType(int requestEntityType, Map defaultRequestHeaders) { this(requestEntityType, null, defaultRequestHeaders); } public AbstractEntityRequestType(Map defaultRequestHeaders) { this(NO_REQUEST_ENTITY, defaultRequestHeaders); } public AbstractEntityRequestType() { this(null); } public boolean useRequestEntity() { return requestEntityType > -1; } public RequestEntity generateRequestEntity(String uri, IRemoteCall call, IRemoteCallable callable, IRemoteCallParameter paramDefault, Object paramToSerialize) throws NotSerializableException { if (paramToSerialize instanceof RequestEntity) return (RequestEntity) paramToSerialize; switch (requestEntityType) { case INPUT_STREAM_REQUEST_ENTITY: if (paramToSerialize instanceof InputStream) { return new InputStreamRequestEntity((InputStream) paramToSerialize, getContentLength(call, callable, paramDefault), getContentType(call, callable, paramDefault)); } throw new NotSerializableException( "Cannot generate request entity. Expecting InputStream and got class=" //$NON-NLS-1$ + paramToSerialize.getClass().getName()); case STRING_REQUEST_ENTITY: if (paramToSerialize instanceof String) { try { return new StringRequestEntity((String) paramToSerialize, getContentType(call, callable, paramDefault), getCharset(call, callable, paramDefault)); } catch (UnsupportedEncodingException e) { throw new NotSerializableException( "Could not create request entity from call parameters: " + e.getMessage()); //$NON-NLS-1$ } } throw new NotSerializableException("Cannot generate request entity. Expecting String and got class=" //$NON-NLS-1$ + paramToSerialize.getClass().getName()); case BYTEARRAY_REQUEST_ENTITY: if (paramToSerialize instanceof byte[]) { return new ByteArrayRequestEntity((byte[]) paramToSerialize, getContentType(call, callable, paramDefault)); } throw new NotSerializableException("Cannot generate request entity. Expecting byte[] and got class=" //$NON-NLS-1$ + paramToSerialize.getClass().getName()); case FILE_REQUEST_ENTITY: if (paramToSerialize instanceof File) { return new FileRequestEntity((File) paramToSerialize, getContentType(call, callable, paramDefault)); } throw new NotSerializableException("Remote call parameter with name=" + paramDefault.getName() //$NON-NLS-1$ + " is incorrect type for creating request entity."); //$NON-NLS-1$ default: throw new NotSerializableException("Request entity generation not supported for this request type"); //$NON-NLS-1$ } } protected String getCharset(IRemoteCall call, IRemoteCallable callable, IRemoteCallParameter paramDefault) { IRemoteCallParameter[] defaultParameters = callable.getDefaultParameters(); Object[] parameters = call.getParameters(); if (defaultParameters != null) { for (int i = 0; i < defaultParameters.length; i++) { if (CHARSET_PARAM_NAME.equals(defaultParameters[i].getName())) { Object o = (parameters != null && parameters.length > i) ? parameters[i] : defaultParameters[i]; if (o instanceof String) { return (String) o; } } } } return defaultCharset; } protected long getContentLength(IRemoteCall call, IRemoteCallable callable, IRemoteCallParameter paramDefault) { IRemoteCallParameter[] defaultParameters = callable.getDefaultParameters(); Object[] parameters = call.getParameters(); if (defaultParameters != null) { for (int i = 0; i < defaultParameters.length; i++) { if (CONTENT_LENGTH_PARAM_NAME.equals(defaultParameters[i].getName())) { Object o = (parameters != null && parameters.length > i) ? parameters[i] : defaultParameters[i]; if (o instanceof Number) { return ((Number) o).longValue(); } else if (o instanceof String) { try { return Integer.parseInt((String) o); } catch (NumberFormatException e) { return InputStreamRequestEntity.CONTENT_LENGTH_AUTO; } } } } } return defaultContentLength; } protected String getContentType(IRemoteCall call, IRemoteCallable callable, IRemoteCallParameter paramDefault) { IRemoteCallParameter[] defaultParameters = callable.getDefaultParameters(); Object[] parameters = call.getParameters(); if (defaultParameters != null) { for (int i = 0; i < defaultParameters.length; i++) { if (CONTENT_TYPE_PARAM_NAME.equals(defaultParameters[i].getName())) { Object o = (parameters != null && parameters.length > i) ? parameters[i] : defaultParameters[i]; if (o instanceof String) { return (String) o; } } } } return defaultContentType; } }