Mercurial > dive4elements > gnv-client
diff gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVProductArtifactFactory.java @ 478:0e0c64c821dc
Added support to step back to the point for choosing a product.
gnv-artifacts/trunk@547 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Fri, 15 Jan 2010 18:21:49 +0000 |
parents | |
children | d47b478e662b |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/GNVProductArtifactFactory.java Fri Jan 15 18:21:49 2010 +0000 @@ -0,0 +1,174 @@ +package de.intevation.gnv.artifacts; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.Map; +import java.util.Set; + +import javax.xml.xpath.XPathConstants; + +import org.w3c.dom.Document; +import org.w3c.dom.Element; +import org.w3c.dom.Node; +import org.w3c.dom.NodeList; + +import de.intevation.artifactdatabase.DefaultArtifactFactory; +import de.intevation.artifactdatabase.ProxyArtifact; +import de.intevation.artifactdatabase.XMLUtils; +import de.intevation.artifacts.Artifact; +import de.intevation.artifacts.ArtifactFactory; +import de.intevation.gnv.artifacts.fis.SelectProductArtifact; +import de.intevation.gnv.artifacts.fis.product.DefaultProduct; +import de.intevation.gnv.state.DefaultInputData; +import de.intevation.gnv.state.InputData; + +import org.apache.log4j.Logger; + +/** + * @author Ingo Weinzierl <ingo.weinzierl@intevation.de> + */ +public class GNVProductArtifactFactory extends DefaultArtifactFactory { + + public static final String XPATH_REPLACE_NAME = "IDENTIFIER"; + + public static final String XPATH_PRODUCT_ARTIFACT = + "artifact-database/artifacts/artifact[@name='"+XPATH_REPLACE_NAME+"']"; + + public static final String XPATH_PRODUCT = "products/product"; + + public static final String XPATH_PRODUCT_NAME = "@name"; + + public static final String XPATH_PRODUCT_FACTORY = "artifact-factory"; + + public static final String XPATH_PRODUCT_PARAMETER = "parameters/parameter"; + + private Logger logger = Logger.getLogger(GNVProductArtifactFactory.class); + + private Map productFactories; + private Map products; + + + public GNVProductArtifactFactory() { + } + + @Override + public Artifact createArtifact(String identifier, Object context) { + + // create a SelectProductArtifact for initial product selection + Artifact artifact = super.createArtifact(identifier, context); + + if (artifact instanceof ProxyArtifact) { + + SelectProductArtifact select = new SelectProductArtifact(); + select.setProducts(products); + select.setup(identifier, this, context); + + ((ProxyArtifact) artifact).setProxied(select); + } + + return artifact; + } + + @Override + public void setup(Document document, Node factoryNode) { + super.setup(document, factoryNode); + + String xpath = XPATH_PRODUCT_ARTIFACT.replace(XPATH_REPLACE_NAME, name); + Node artifact = (Node) XMLUtils.xpath( + document, xpath, XPathConstants.NODE); + + NodeList productNodes = (NodeList) XMLUtils.xpath( + artifact, XPATH_PRODUCT, XPathConstants.NODESET); + + if (productNodes == null) { + logger.warn("No products found for fis: " + name); + return; + } + + int productLength = productNodes.getLength(); + + if (productLength != 0) { + productFactories = new HashMap(productLength); + products = new HashMap(productLength); + + parseProductFactories(document, productNodes); + } + } + + + public ArtifactFactory getArtifactFactoryByName(String name) { + return (ArtifactFactory) productFactories.get(name); + } + + + protected void parseProductFactories(Document document, NodeList products) { + int items = products.getLength(); + + for(int i = 0; i < items; i++) { + + try { + Node product = products.item(i); + + String name = (String) XMLUtils.xpath( + product, XPATH_PRODUCT_NAME, XPathConstants.STRING); + + Node factoryNode = (Node) XMLUtils.xpath( + product, XPATH_PRODUCT_FACTORY, XPathConstants.NODE); + + String factoryClass = factoryNode.getTextContent(); + + if (factoryClass == null || factoryClass.equals("")) { + logger.warn("No artifact factory class found for " + name); + continue; + } + + Class cls = Class.forName(factoryClass); + ArtifactFactory factory = (ArtifactFactory) cls.newInstance(); + factory.setup(document, factoryNode); + + productFactories.put(name, factory); + initializeProducts(product); + } + catch (ClassNotFoundException cnfe) { + logger.warn(cnfe, cnfe); + } + catch (InstantiationException ie) { + logger.warn(ie, ie); + } + catch (IllegalAccessException iae) { + logger.warn(iae, iae); + } + } + } + + + protected void initializeProducts(Node productNode) { + String productName = (String) XMLUtils.xpath( + productNode, "@name", XPathConstants.STRING); + + NodeList parameterNodes = (NodeList) XMLUtils.xpath( + productNode, XPATH_PRODUCT_PARAMETER, XPathConstants.NODESET + ); + + if (parameterNodes != null) { + int items = parameterNodes.getLength(); + Collection inputParameter = new ArrayList(items); + + for (int j = 0; j < items; j++) { + Node parameterNode = (Node) parameterNodes.item(j); + String name = (String) XMLUtils.xpath( + parameterNode, "@name", XPathConstants.STRING); + String value = (String) XMLUtils.xpath( + parameterNode, "@value", XPathConstants.STRING); + + inputParameter.add(new DefaultInputData(name, value)); + } + + products.put( + productName, + new DefaultProduct(productName, inputParameter, this.name) + ); + } + } +}