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package org.kuali.rice.kew.rule.xmlrouting; |
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import java.util.Iterator; |
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import java.util.List; |
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import javax.xml.namespace.QName; |
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import javax.xml.xpath.XPath; |
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import javax.xml.xpath.XPathFunction; |
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import javax.xml.xpath.XPathFunctionResolver; |
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import org.apache.commons.lang.StringUtils; |
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import org.kuali.rice.kew.api.WorkflowRuntimeException; |
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import org.kuali.rice.kew.rule.RuleExtension; |
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import org.kuali.rice.kew.rule.RuleExtensionValue; |
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import org.kuali.rice.kew.xml.xstream.XStreamSafeSearchFunction; |
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import org.w3c.dom.Node; |
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| 40 | 7 | public class WorkflowFunctionResolver implements XPathFunctionResolver { |
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private List<RuleExtension> ruleExtensions; |
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private Node rootNode; |
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private XPath xpath; |
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public XPathFunction resolveFunction(QName fname, int arity) { |
| 48 | 10 | if (fname == null) { |
| 49 | 0 | throw new NullPointerException("The function name cannot be null."); |
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} |
| 51 | 10 | if (fname.equals(new QName("http://nothingfornowwf.com", "ruledata", "wf"))) { |
| 52 | 0 | if (ruleExtensions == null) { |
| 53 | 0 | throw new IllegalArgumentException("There are no rule extensions."); |
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} |
| 55 | 0 | return new XPathFunction() { |
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public Object evaluate(List args) { |
| 57 | 0 | if (args.size() == 1) { |
| 58 | 0 | String name = (String) args.get(0); |
| 59 | 0 | for (RuleExtension ruleExtension : ruleExtensions) { |
| 60 | 0 | for (Iterator iter = ruleExtension.getExtensionValues().iterator(); iter.hasNext();) { |
| 61 | 0 | RuleExtensionValue value = (RuleExtensionValue) iter.next(); |
| 62 | 0 | if (value.getKey().equals(name)) { |
| 63 | 0 | return value.getValue(); |
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} |
| 65 | 0 | } |
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} |
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} |
| 68 | 0 | return ""; |
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} |
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}; |
| 71 | 10 | } else if (fname.equals(new QName("http://nothingfornowwf.com", "xstreamsafe", "wf"))) { |
| 72 | 10 | return new XStreamSafeSearchFunction(rootNode, this.getXpath()); |
| 73 | 0 | } else if (fname.equals(new QName("http://nothingfornowwf.com", "upper-case", "wf"))) { |
| 74 | 0 | return new UpperCaseFunction(); |
| 75 | 0 | } else if (fname.equals(new QName("http://nothingfornowwf.com", "field", "wf"))) { |
| 76 | 0 | return new XPathFunction() { |
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public Object evaluate(java.util.List args) { |
| 78 | 0 | if (args.size() == 1) { |
| 79 | 0 | String name = (String) args.get(0); |
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try { |
| 81 | 0 | return field(name); |
| 82 | 0 | } catch (Exception e) { |
| 83 | 0 | throw new WorkflowRuntimeException("Failed to find field to validate.", e); |
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} |
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} |
| 86 | 0 | return ""; |
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} |
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}; |
| 89 | 0 | } else if (fname.equals(new QName("http://nothingfornowwf.com", "empty", "wf"))) { |
| 90 | 0 | return new XPathFunction() { |
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public Object evaluate(java.util.List args) { |
| 92 | 0 | return empty(args.get(0)); |
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} |
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}; |
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} else { |
| 96 | 0 | return null; |
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} |
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} |
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public String field(String fieldName) throws Exception { |
| 101 | 0 | return xpath.evaluate("//edlContent/data/version[@current='true']/field[@name='" + fieldName + "']/value", rootNode); |
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} |
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public boolean empty(Object object) { |
| 106 | 0 | if (object instanceof String) { |
| 107 | 0 | return StringUtils.isBlank((String)object); |
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} |
| 109 | 0 | return object == null; |
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} |
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public List<RuleExtension> getRuleExtensions() { |
| 113 | 0 | return this.ruleExtensions; |
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} |
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public void setRuleExtensions(List<RuleExtension> ruleExtensions) { |
| 117 | 0 | this.ruleExtensions = ruleExtensions; |
| 118 | 0 | } |
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public Node getRootNode() { |
| 121 | 0 | return rootNode; |
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} |
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public void setRootNode(Node rootNode) { |
| 125 | 5 | this.rootNode = rootNode; |
| 126 | 5 | } |
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public XPath getXpath() { |
| 130 | 10 | return xpath; |
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} |
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public void setXpath(XPath xpath) { |
| 134 | 7 | this.xpath = xpath; |
| 135 | 7 | } |
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} |