legacy/org.argeo.slc.spring/src/org/argeo/slc/core/execution/xml/SpecBeanDefinitionParser.java

   1 package org.argeo.slc.core.execution.xml;
   2
   3 import java.util.List;
   4
   5 import org.apache.commons.logging.Log;
   6 import org.apache.commons.logging.LogFactory;
   7 import org.argeo.slc.core.execution.DefaultExecutionSpec;
   8 import org.argeo.slc.execution.RefSpecAttribute;
   9 import org.argeo.slc.execution.RefValueChoice;
  10 import org.argeo.slc.primitive.PrimitiveSpecAttribute;
  11 import org.springframework.beans.factory.config.BeanDefinition;
  12 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
  13 import org.springframework.beans.factory.support.ManagedList;
  14 import org.springframework.beans.factory.support.ManagedMap;
  15 import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
  16 import org.springframework.beans.factory.xml.ParserContext;
  17 import org.springframework.util.StringUtils;
  18 import org.springframework.util.xml.DomUtils;
  19 import org.w3c.dom.Element;
  20
  21 /** Interprets the <flow:spec> tag */
  22 public class SpecBeanDefinitionParser extends
  23                 AbstractSingleBeanDefinitionParser {
  24         private Log log = LogFactory.getLog(SpecBeanDefinitionParser.class);
  25
  26         @Override
  27         protected void doParse(Element element, ParserContext parserContext,
  28                         BeanDefinitionBuilder builder) {
  29                 builder.getBeanDefinition().setDescription(
  30                                 DomUtils.getChildElementValueByTagName(element, "description"));
  31
  32                 ManagedMap<String, BeanDefinition> attributes = new ManagedMap<String, BeanDefinition>();
  33
  34                 // Primitives
  35                 for (Element child : (List<Element>) DomUtils
  36                                 .getChildElementsByTagName(element, "primitive")) {
  37                         BeanDefinitionBuilder childBuilder = BeanDefinitionBuilder
  38                                         .genericBeanDefinition(PrimitiveSpecAttribute.class);
  39                         addCommonProperties(child, parserContext, childBuilder);
  40
  41                         String type = child.getAttribute("type");
  42                         if (StringUtils.hasText(type))
  43                                 childBuilder.addPropertyValue("type", type);
  44
  45                         putInAttributes(attributes, child,
  46                                         childBuilder.getBeanDefinition(), "primitive");
  47                 }
  48
  49                 // Refs
  50                 for (Element refAttrElem : (List<Element>) DomUtils
  51                                 .getChildElementsByTagName(element, "ref")) {
  52                         BeanDefinitionBuilder refAttrBuilder = BeanDefinitionBuilder
  53                                         .genericBeanDefinition(RefSpecAttribute.class);
  54                         addCommonProperties(refAttrElem, parserContext, refAttrBuilder);
  55
  56                         String targetClassName = refAttrElem.getAttribute("targetClass");
  57                         if (StringUtils.hasText(targetClassName))
  58                                 refAttrBuilder.addPropertyValue("targetClass", targetClassName);
  59
  60                         // Choices
  61                         Element choicesElem = DomUtils.getChildElementByTagName(
  62                                         refAttrElem, "choices");
  63                         if (choicesElem != null) {
  64                                 List<Element> choices = DomUtils.getChildElementsByTagName(
  65                                                 choicesElem, "choice");
  66                                 ManagedList<BeanDefinition> choiceBeans = new ManagedList<BeanDefinition>(
  67                                                 choices.size());
  68                                 for (Element choiceElem : choices) {
  69                                         BeanDefinitionBuilder choiceBuilder = BeanDefinitionBuilder
  70                                                         .genericBeanDefinition(RefValueChoice.class);
  71                                         choiceBuilder.addPropertyValue("name",
  72                                                         choiceElem.getAttribute("name"));
  73                                         String desc = choiceElem.getAttribute("description");
  74                                         if (StringUtils.hasText(desc))
  75                                                 choiceBuilder.addPropertyValue("description", desc);
  76
  77                                         choiceBeans.add(choiceBuilder.getBeanDefinition());
  78                                 }
  79                                 refAttrBuilder.addPropertyValue("choices", choiceBeans);
  80                         }
  81
  82                         putInAttributes(attributes, refAttrElem,
  83                                         refAttrBuilder.getBeanDefinition(), "ref");
  84                 }
  85
  86                 builder.addPropertyValue("attributes", attributes);
  87         }
  88
  89         protected void addCommonProperties(Element element,
  90                         ParserContext parserContext, BeanDefinitionBuilder specAttr) {
  91                 addBooleanProperty("isImmutable", specAttr, element);
  92                 addBooleanProperty("isConstant", specAttr, element);
  93                 addBooleanProperty("isHidden", specAttr, element);
  94                 addBooleanProperty("isParameter", specAttr, element);
  95                 addBooleanProperty("isFrozen", specAttr, element);
  96
  97                 Object value = NamespaceUtils.parseValue(element, parserContext,
  98                                 specAttr.getBeanDefinition(), "value");
  99                 if (value != null)
 100                         specAttr.addPropertyValue("value", value);
 101
 102         }
 103
 104         protected void putInAttributes(
 105                         ManagedMap<String, BeanDefinition> attributes, Element child,
 106                         BeanDefinition beanDefinition, String nature) {
 107                 String name = child.getAttribute("name");
 108                 attributes.put(name, beanDefinition);
 109                 if (log.isTraceEnabled())
 110                         log.debug("Added " + nature + " attribute " + name);
 111
 112         }
 113
 114         private void addBooleanProperty(String name,
 115                         BeanDefinitionBuilder specAttr, Element element) {
 116                 String bool = element.getAttribute(name);
 117                 if (StringUtils.hasText(bool))
 118                         specAttr.addPropertyValue(name, Boolean.parseBoolean(bool));
 119
 120         }
 121
 122         @Override
 123         protected Class<DefaultExecutionSpec> getBeanClass(Element element) {
 124                 return DefaultExecutionSpec.class;
 125         }
 126
 127         protected boolean shouldGenerateIdAsFallback() {
 128                 return false;
 129         }
 130
 131 }