| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.uima.fit.factory; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Array; |
| import java.net.URL; |
| import java.util.Collection; |
| |
| import org.apache.uima.UIMAFramework; |
| import org.apache.uima.resource.ResourceCreationSpecifier; |
| import org.apache.uima.resource.ResourceSpecifier; |
| import org.apache.uima.resource.metadata.ConfigurationParameter; |
| import org.apache.uima.resource.metadata.ConfigurationParameterDeclarations; |
| import org.apache.uima.resource.metadata.ConfigurationParameterSettings; |
| import org.apache.uima.resource.metadata.ResourceMetaData; |
| import org.apache.uima.util.InvalidXMLException; |
| import org.apache.uima.util.XMLInputSource; |
| import org.apache.uima.util.XMLParser; |
| |
| /** |
| */ |
| public final class ResourceCreationSpecifierFactory { |
| private ResourceCreationSpecifierFactory() { |
| // This class is not meant to be instantiated |
| } |
| |
| /** |
| * Parse a ResourceCreationSpecifier from the URL of an XML descriptor file, setting additional |
| * configuration parameters as necessary. |
| * |
| * @param descriptorURL |
| * The URL of the XML descriptor file. |
| * @param parameters |
| * Any additional configuration parameters to be set. These should be supplied as (name, |
| * value) pairs, so there should always be an even number of parameters. |
| * @return The ResourceCreationSpecifier for the XML descriptor with all the configuration |
| * parameters set. |
| * @throws IOException |
| * if an I/O error occurs |
| * @throws InvalidXMLException |
| * if the input XML is not valid or does not specify a valid {@link ResourceSpecifier} |
| */ |
| public static ResourceCreationSpecifier createResourceCreationSpecifier(URL descriptorURL, |
| Object[] parameters) throws InvalidXMLException, IOException { |
| return createResourceCreationSpecifier(new XMLInputSource(descriptorURL), parameters); |
| } |
| |
| /** |
| * Parse a ResourceCreationSpecifier from XML descriptor file input, setting additional |
| * configuration parameters as necessary. |
| * |
| * @param xmlInput |
| * The descriptor file as an XMLInputSource. |
| * @param parameters |
| * Any additional configuration parameters to be set. These should be supplied as (name, |
| * value) pairs, so there should always be an even number of parameters. |
| * @return The ResourceCreationSpecifier for the XML descriptor with all the configuration |
| * parameters set. |
| * @throws InvalidXMLException |
| * if the input XML is not valid or does not specify a valid {@link ResourceSpecifier} |
| */ |
| public static ResourceCreationSpecifier createResourceCreationSpecifier(XMLInputSource xmlInput, |
| Object[] parameters) throws InvalidXMLException { |
| ConfigurationParameterFactory.ensureParametersComeInPairs(parameters); |
| |
| ResourceCreationSpecifier specifier; |
| XMLParser parser = UIMAFramework.getXMLParser(); |
| specifier = (ResourceCreationSpecifier) parser.parseResourceSpecifier(xmlInput); |
| setConfigurationParameters(specifier, parameters); |
| |
| return specifier; |
| } |
| |
| /** |
| * Parse a ResourceCreationSpecifier from an XML descriptor file, setting additional configuration |
| * parameters as necessary. |
| * |
| * @param descriptorPath |
| * The path to the XML descriptor file. |
| * @param parameters |
| * Any additional configuration parameters to be set. These should be supplied as (name, |
| * value) pairs, so there should always be an even number of parameters. |
| * @return The ResourceCreationSpecifier for the XML descriptor with all the configuration |
| * parameters set. |
| * @throws IOException |
| * if an I/O error occurs |
| * @throws InvalidXMLException |
| * if the input XML is not valid or does not specify a valid {@link ResourceSpecifier} |
| */ |
| public static ResourceCreationSpecifier createResourceCreationSpecifier(String descriptorPath, |
| Object[] parameters) throws InvalidXMLException, IOException { |
| return createResourceCreationSpecifier(new XMLInputSource(descriptorPath), parameters); |
| } |
| |
| /** |
| * Create configuration parameter declarations and settings from a list of (name, value) pairs. |
| * |
| * @param specifier |
| * The ResourceCreationSpecifier whose parameters are to be set. |
| * @param configurationData |
| * The configuration parameters to be set. These should be supplied as (name, value) |
| * pairs, so there should always be an even number of parameters. |
| */ |
| public static void setConfigurationParameters(ResourceCreationSpecifier specifier, |
| Object... configurationData) { |
| if (configurationData == null || configurationData.length == 0) { |
| return; |
| } |
| |
| ConfigurationParameterFactory.ensureParametersComeInPairs(configurationData); |
| |
| ConfigurationParameter[] configurationParameters = new ConfigurationParameter[configurationData.length / 2]; |
| Object[] configurationValues = new Object[configurationData.length / 2]; |
| |
| for (int i = 0; i < configurationValues.length; i++) { |
| String name = (String) configurationData[i * 2]; |
| Object value = configurationData[i * 2 + 1]; |
| ConfigurationParameter param = ConfigurationParameterFactory.createPrimitiveParameter(name, |
| value.getClass(), null, false); |
| configurationParameters[i] = param; |
| configurationValues[i] = ConfigurationParameterFactory.convertParameterValue(param, value); |
| } |
| setConfigurationParameters(specifier, configurationParameters, configurationValues); |
| } |
| |
| /** |
| * This method passes through to |
| * {@link #setConfigurationParameters(ResourceMetaData, ConfigurationParameter[], Object[])} |
| * |
| * @param specifier |
| * The ResourceCreationSpecifier whose parameters are to be set. |
| * @param configurationParameters |
| * the configuration parameter declarations. |
| * @param configurationValues |
| * the configuration parameter values. |
| */ |
| public static void setConfigurationParameters(ResourceCreationSpecifier specifier, |
| ConfigurationParameter[] configurationParameters, Object[] configurationValues) { |
| setConfigurationParameters(specifier.getMetaData(), configurationParameters, |
| configurationValues); |
| } |
| |
| /** |
| * This method sets the configuration parameters of a resource. The length of |
| * configurationParameters and configurationValues should be equal |
| * |
| * @param metaData |
| * The ResourceMetaData whose parameters are to be set. |
| * @param configurationParameters |
| * an array of configuration parameters |
| * @param configurationValues |
| * an array of configuration parameter values |
| */ |
| public static void setConfigurationParameters(ResourceMetaData metaData, |
| ConfigurationParameter[] configurationParameters, Object[] configurationValues) { |
| ConfigurationParameterDeclarations paramDecls = metaData |
| .getConfigurationParameterDeclarations(); |
| ConfigurationParameterSettings paramSettings = metaData.getConfigurationParameterSettings(); |
| for (int i = 0; i < configurationParameters.length; i++) { |
| ConfigurationParameter decl = paramDecls.getConfigurationParameter(null, |
| configurationParameters[i].getName()); |
| if (paramDecls != null && decl == null) { |
| paramDecls.addConfigurationParameter(configurationParameters[i]); |
| decl = configurationParameters[i]; |
| } |
| |
| // Upgrade single-value to multi-value if necessary |
| Object value = configurationValues[i]; |
| if ((value != null) && decl.isMultiValued() && !isMultiValue(value)) { |
| value = Array.newInstance(value.getClass(), 1); |
| Array.set(value, 0, configurationValues[i]); |
| } |
| |
| paramSettings.setParameterValue(configurationParameters[i].getName(), value); |
| } |
| } |
| |
| /** |
| * Check if the given parameter represents one value or multiple values. |
| */ |
| private static boolean isMultiValue(Object aObject) { |
| if (aObject != null) { |
| return (aObject instanceof Collection) || aObject.getClass().isArray(); |
| } else { |
| return false; |
| } |
| } |
| } |