Mercurial > dive4elements > river
diff flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/StateFactory.java @ 113:f077df8ad54c
The input data items of a state are read from configuration after the state has been setup.
flys-artifacts/trunk@1302 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
---|---|
date | Mon, 07 Feb 2011 17:42:14 +0000 |
parents | 50273a391e53 |
children | 45f7762767e2 |
line wrap: on
line diff
--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/StateFactory.java Mon Feb 07 11:37:33 2011 +0000 +++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/StateFactory.java Mon Feb 07 17:42:14 2011 +0000 @@ -5,7 +5,9 @@ import org.apache.log4j.Logger; import org.w3c.dom.Node; +import org.w3c.dom.NodeList; +import de.intevation.artifactdatabase.data.DefaultStateData; import de.intevation.artifactdatabase.state.State; import de.intevation.artifacts.common.utils.XMLUtils; @@ -22,6 +24,18 @@ /** The XPath to the classname of the state */ public static final String XPATH_STATE = "@state"; + /** The XPath to the data items of the state relative to the state node. */ + public static final String XPATH_DATA = "data"; + + /** The XPath to the data name relative to the data node.*/ + public static final String XPATH_DATA_NAME = "@name"; + + /** The XPath to the data type relative to the data node.*/ + public static final String XPATH_DATA_TYPE = "@type"; + + /** The XPath to the data description relative to the data node.*/ + public static final String XPATH_DATA_DESCRIPTION = "@description"; + /** * Creates a new State based on the configured class provided by @@ -41,6 +55,8 @@ logger.debug("Create a new State for class: " + clazz); state = (State) Class.forName(clazz).newInstance(); state.setup(stateConf); + + initializeStateData(state, stateConf); } catch (InstantiationException ie) { logger.error(ie, ie); @@ -54,5 +70,52 @@ return state; } + + + /** + * This method extracts the configured input data of a state and adds new + * StateData objects to the State. + * + * @param state The state. + * @param stateConf The state configuration node. + */ + protected static void initializeStateData(State state, Node stateConf) { + NodeList dataList = (NodeList) XMLUtils.xpath( + stateConf, XPATH_DATA, XPathConstants.NODESET); + + if (dataList == null || dataList.getLength() == 0) { + logger.debug("The state has no input data configured."); + + return; + } + + int items = dataList.getLength(); + + logger.debug("The state has " + items + " data items configured."); + + for (int i = 0; i < items; i++) { + Node data = dataList.item(i); + + String name = (String) XMLUtils.xpath( + data, XPATH_DATA_NAME, XPathConstants.STRING); + String type = (String) XMLUtils.xpath( + data, XPATH_DATA_TYPE, XPathConstants.STRING); + String desc = (String) XMLUtils.xpath( + data, XPATH_DATA_DESCRIPTION, XPathConstants.STRING); + + if (name == null || name.equals("")) { + logger.warn("No name for data item at pos " + i + " found."); + continue; + } + + if (type == null || type.equals("")) { + logger.warn("No type for data item at pos " + i + " found."); + logger.warn("Default type 'string' used."); + type = "string"; + } + + state.addData(name, new DefaultStateData(name, type, desc)); + } + } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :