Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/meta/Builder.java @ 957:e91996b46e3c
Meta data template: Added new choose/when/otherwise construct similiar to XSLT
flys-artifacts/trunk@2376 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Wed, 20 Jul 2011 14:59:25 +0000 |
| parents | c09c9e05ecfa |
| children | a2b20ed3d3b4 |
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| 956:1cf7b4ee7b6d | 957:e91996b46e3c |
|---|---|
| 10 import org.w3c.dom.Document; | 10 import org.w3c.dom.Document; |
| 11 import org.w3c.dom.NodeList; | 11 import org.w3c.dom.NodeList; |
| 12 import org.w3c.dom.Node; | 12 import org.w3c.dom.Node; |
| 13 import org.w3c.dom.Element; | 13 import org.w3c.dom.Element; |
| 14 | 14 |
| 15 import javax.xml.xpath.XPath; | |
| 16 import javax.xml.xpath.XPathFactory; | |
| 17 import javax.xml.xpath.XPathExpressionException; | |
| 18 import javax.xml.xpath.XPathConstants; | |
| 19 | |
| 15 import java.sql.SQLException; | 20 import java.sql.SQLException; |
| 16 import java.sql.Connection; | 21 import java.sql.Connection; |
| 17 | 22 |
| 18 import de.intevation.artifacts.common.utils.XMLUtils; | 23 import de.intevation.artifacts.common.utils.XMLUtils; |
| 19 | 24 |
| 23 { | 28 { |
| 24 private static Logger log = Logger.getLogger(Builder.class); | 29 private static Logger log = Logger.getLogger(Builder.class); |
| 25 | 30 |
| 26 public static final String DC_NAMESPACE_URI = | 31 public static final String DC_NAMESPACE_URI = |
| 27 "http://www.intevation.org/2011/Datacage"; | 32 "http://www.intevation.org/2011/Datacage"; |
| 33 | |
| 34 private static final Document EVAL_DOCUMENT = | |
| 35 XMLUtils.newDocument(); | |
| 36 | |
| 37 private static final XPathFactory XPATH_FACTORY = | |
| 38 XPathFactory.newInstance(); | |
| 39 | |
| 40 | |
| 28 | 41 |
| 29 protected Document template; | 42 protected Document template; |
| 30 | 43 |
| 31 public class BuildHelper | 44 public class BuildHelper |
| 32 { | 45 { |
| 167 Element element = (Element)parent; | 180 Element element = (Element)parent; |
| 168 | 181 |
| 169 element.setAttribute(name, value); | 182 element.setAttribute(name, value); |
| 170 } | 183 } |
| 171 | 184 |
| 185 protected void choose(Node parent, Element current) | |
| 186 throws SQLException | |
| 187 { | |
| 188 Node branch = null; | |
| 189 | |
| 190 NodeList children = current.getChildNodes(); | |
| 191 for (int i = 0, N = children.getLength(); i < N; ++i) { | |
| 192 Node child = children.item(i); | |
| 193 String ns = child.getNamespaceURI(); | |
| 194 if (ns == null | |
| 195 || !ns.equals(DC_NAMESPACE_URI) | |
| 196 || child.getNodeType() != Node.ELEMENT_NODE | |
| 197 ) { | |
| 198 continue; | |
| 199 } | |
| 200 String name = child.getLocalName(); | |
| 201 if ("when".equals(name)) { | |
| 202 Element when = (Element)child; | |
| 203 String test = when.getAttribute("test"); | |
| 204 if (test.length() == 0) { | |
| 205 log.warn("no 'test' attribute found for when"); | |
| 206 continue; | |
| 207 } | |
| 208 | |
| 209 try { | |
| 210 XPath xpath = XPATH_FACTORY.newXPath(); | |
| 211 xpath.setXPathVariableResolver(frames); | |
| 212 Object result = xpath.evaluate( | |
| 213 test, EVAL_DOCUMENT, XPathConstants.BOOLEAN); | |
| 214 | |
| 215 if (result instanceof Boolean | |
| 216 && ((Boolean)result).booleanValue()) { | |
| 217 branch = child; | |
| 218 break; | |
| 219 } | |
| 220 } | |
| 221 catch (XPathExpressionException xfce) { | |
| 222 log.error(xfce); | |
| 223 } | |
| 224 continue; | |
| 225 } | |
| 226 else if ("otherwise".equals(name)) { | |
| 227 branch = child; | |
| 228 // No break here. | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 if (branch != null) { | |
| 233 NodeList subs = branch.getChildNodes(); | |
| 234 for (int i = 0, N = subs.getLength(); i < N; ++i) { | |
| 235 build(parent, subs.item(i)); | |
| 236 } | |
| 237 } | |
| 238 } | |
| 239 | |
| 172 protected void convert(Node parent, Element current) { | 240 protected void convert(Node parent, Element current) { |
| 173 | 241 |
| 174 String variable = expand(current.getAttribute("var")); | 242 String variable = expand(current.getAttribute("var")); |
| 175 String type = expand(current.getAttribute("type")); | 243 String type = expand(current.getAttribute("type")); |
| 176 | 244 |
| 205 } | 273 } |
| 206 else { | 274 else { |
| 207 String localName = current.getLocalName(); | 275 String localName = current.getLocalName(); |
| 208 if ("context".equals(localName)) { | 276 if ("context".equals(localName)) { |
| 209 context(parent, (Element)current); | 277 context(parent, (Element)current); |
| 278 } | |
| 279 else if ("choose".equals(localName)) { | |
| 280 choose(parent, (Element)current); | |
| 210 } | 281 } |
| 211 else if ("attribute".equals(localName)) { | 282 else if ("attribute".equals(localName)) { |
| 212 attribute(parent, (Element)current); | 283 attribute(parent, (Element)current); |
| 213 } | 284 } |
| 214 else if ("element".equals(localName)) { | 285 else if ("element".equals(localName)) { |