+++ /dev/null
-package org.argeo.slc.core.execution.xml;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.argeo.slc.SlcException;
-import org.argeo.slc.core.execution.DefaultExecutionFlow;
-import org.argeo.slc.execution.ExecutionFlow;
-import org.springframework.beans.factory.BeanDefinitionStoreException;
-import org.springframework.beans.factory.config.RuntimeBeanReference;
-import org.springframework.beans.factory.support.AbstractBeanDefinition;
-import org.springframework.beans.factory.support.BeanDefinitionBuilder;
-import org.springframework.beans.factory.support.ManagedList;
-import org.springframework.beans.factory.support.ManagedMap;
-import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
-import org.springframework.beans.factory.xml.ParserContext;
-import org.springframework.util.StringUtils;
-import org.springframework.util.xml.DomUtils;
-import org.w3c.dom.Element;
-import org.w3c.dom.Node;
-import org.w3c.dom.NodeList;
-
-/** Interprets the <flow:flow> tag */
-public class FlowBeanDefinitionParser extends
- AbstractSingleBeanDefinitionParser {
- private Log log = LogFactory.getLog(FlowBeanDefinitionParser.class);
-
- /** Whether the user has already be warned on path attribute usage. */
- private Boolean warnedAboutPathAttribute = false;
-
- @Override
- protected void doParse(Element element, ParserContext parserContext,
- BeanDefinitionBuilder builder) {
- String path = element.getAttribute("path");
- if (StringUtils.hasText(path)) {
- builder.addPropertyValue("path", path);
-
- // warns user only once
- if (!warnedAboutPathAttribute)
- log.warn("The path=\"\" attribute is deprecated"
- + " and will be removed in a later release."
- + " Use <flow:flow name=\"/my/path/flowName\">.");
- warnedAboutPathAttribute = true;
- }
-
- String spec = element.getAttribute("spec");
- if (StringUtils.hasText(spec))
- builder.getBeanDefinition().getConstructorArgumentValues()
- .addGenericArgumentValue(new RuntimeBeanReference(spec));
-
- String abstrac = element.getAttribute("abstract");
- if (StringUtils.hasText(abstrac))
- builder.setAbstract(Boolean.parseBoolean(abstrac));
-
- String parent = element.getAttribute("parent");
- if (StringUtils.hasText(parent))
- builder.setParentName(parent);
-
- builder.getBeanDefinition().setDescription(
- DomUtils.getChildElementValueByTagName(element, "description"));
-
- List<Element> argsElems = new ArrayList<Element>();
- List<Element> execElems = new ArrayList<Element>();
- List<Element> specElems = new ArrayList<Element>();
- NodeList nodeList = element.getChildNodes();
- for (int i = 0; i < nodeList.getLength(); i++) {
- Node node = nodeList.item(i);
- if (node instanceof Element) {
- if (DomUtils.nodeNameEquals(node, "arg"))
- argsElems.add((Element) node);
- else if (DomUtils.nodeNameEquals(node, "spec"))
- specElems.add((Element) node);
- else if (!DomUtils.nodeNameEquals(node, "description"))
- execElems.add((Element) node);
- }
- }
-
- // Arguments
- if (argsElems.size() != 0) {
- ManagedMap<String, Object> args = new ManagedMap<String, Object>(
- argsElems.size());
- for (Element argElem : argsElems) {
- Object value = NamespaceUtils.parseValue(argElem,
- parserContext, builder.getBeanDefinition(), null);
- if (value != null)
- args.put(argElem.getAttribute("name"), value);
- else
- throw new SlcException("No value defined.");
- }
- builder.getBeanDefinition().getConstructorArgumentValues()
- .addGenericArgumentValue(args);
- }
-
- // Execution specs
- if (StringUtils.hasText(spec) && specElems.size() != 0)
- throw new SlcException("A flow cannot have multiple specs");
- if (specElems.size() == 1) {
- Object specObj = NamespaceUtils.parseBeanOrReference(
- specElems.get(0), parserContext,
- builder.getBeanDefinition());
- builder.getBeanDefinition().getConstructorArgumentValues()
- .addGenericArgumentValue(specObj);
- } else if (specElems.size() > 1)
- throw new SlcException("A flow cannot have multiple specs");
-
- // Executables
- if (execElems.size() != 0) {
- ManagedList<Object> executables = new ManagedList<Object>(
- execElems.size());
- for (Element child : execElems) {
- // child validity check is performed in xsd
- executables.add(NamespaceUtils.parseBeanOrReference(child,
- parserContext, builder.getBeanDefinition()));
- }
- if (executables.size() > 0)
- builder.addPropertyValue("executables", executables);
- }
- }
-
- @SuppressWarnings("unchecked")
- @Override
- protected Class<? extends ExecutionFlow> getBeanClass(Element element) {
- String clss = element.getAttribute("class");
- if (StringUtils.hasText(clss))
- // TODO: check that it actually works
- try {
- return (Class<? extends ExecutionFlow>) getClass()
- .getClassLoader().loadClass(clss);
- } catch (ClassNotFoundException e) {
- try {
- return (Class<? extends ExecutionFlow>) Thread
- .currentThread().getContextClassLoader()
- .loadClass(clss);
- } catch (ClassNotFoundException e1) {
- throw new SlcException("Cannot load class " + clss, e);
- }
- }
- else
- return DefaultExecutionFlow.class;
- }
-
- // parse nested bean definition
- // private Object parseBeanReference(Element element,
- // ParserContext parserContext, BeanDefinitionBuilder builder) {
- // return parserContext.getDelegate().parsePropertySubElement(element,
- // builder.getBeanDefinition());
- // }
-
- @Override
- protected String resolveId(Element element,
- AbstractBeanDefinition definition, ParserContext parserContext)
- throws BeanDefinitionStoreException {
- String name = element.getAttribute("name");
- if (StringUtils.hasText(name)) {
- return name;
- } else {
- return super.resolveId(element, definition, parserContext);
- }
- }
-
- protected boolean shouldGenerateIdAsFallback() {
- return true;
- }
-
-}
projects / gpl / argeo-slc.git / blobdiff