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[SHRINKDESC-105] Adding test cases for all filter classes
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metadata-parser/src/main/java/org/jboss/shrinkwrap/descriptor/metadata/FilterChain.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| package org.jboss.shrinkwrap.descriptor.metadata; | ||
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| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| import org.jboss.shrinkwrap.descriptor.metadata.filter.AttributeFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.AttributeGroupFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.ComplexTypeFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.ElementFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.EnumFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.ExtensionFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.Filter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.GroupFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.ListFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.RestrictionFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.SimpleContentFilter; | ||
| import org.jboss.shrinkwrap.descriptor.metadata.filter.UnionFilter; | ||
| import org.w3c.dom.Element; | ||
| import org.w3c.dom.Node; | ||
| import org.w3c.dom.traversal.TreeWalker; | ||
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| /** | ||
| * Class that allows to traverse a DOM document by using a TreeWalker. | ||
| * <p> | ||
| * This class is refactored from the MetadataParser in order to test | ||
| * the filtering of w3c elements in isolation. | ||
| * | ||
| * @author <a href="mailto:ralf.battenfeld@bluewin.ch">Ralf Battenfeld</a> | ||
| * | ||
| */ | ||
| public class FilterChain { | ||
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| private final static String ELEMENT_LOG = "%s- %s name: %s"; | ||
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| private final List<Filter> filterList = new ArrayList<Filter>(); | ||
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| public FilterChain() { | ||
| filterList.add(new GroupFilter()); | ||
| filterList.add(new ElementFilter()); | ||
| filterList.add(new EnumFilter()); | ||
| filterList.add(new AttributeFilter()); | ||
| filterList.add(new AttributeGroupFilter()); | ||
| filterList.add(new RestrictionFilter()); | ||
| filterList.add(new ComplexTypeFilter()); | ||
| // filterList.add(new SimpleContentFilter()); // simpleContent used for text only types are not supported currently | ||
| filterList.add(new ExtensionFilter()); | ||
| filterList.add(new UnionFilter()); | ||
| filterList.add(new ListFilter()); | ||
| } | ||
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| /** | ||
| * Traverses the DOM and applies the filters for each visited node. | ||
| * | ||
| * @param walker | ||
| * @param indent | ||
| * @param sb | ||
| * Optional {@link StringBuilder} used to track progress for | ||
| * logging purposes. | ||
| */ | ||
| public void traverseAndFilter(final TreeWalker walker, final String indent, | ||
| final Metadata metadata, final StringBuilder sb) { | ||
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| final Node parend = walker.getCurrentNode(); | ||
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| final boolean isLogged = appendText(indent, (Element) parend, sb); | ||
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| for (final Filter filter : filterList) { | ||
| if (filter.filter(metadata, walker)) { | ||
| appendText(" catched by: " + filter.getClass().getSimpleName(), sb); | ||
| break; | ||
| } | ||
| } | ||
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| if (isLogged) { | ||
| appendText("\n", sb); | ||
| } | ||
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| for (Node n = walker.firstChild(); n != null; n = walker.nextSibling()) { | ||
| traverseAndFilter(walker, indent + " ", metadata, sb); | ||
| } | ||
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| walker.setCurrentNode(parend); | ||
| } | ||
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| // --------------------------------------------------------------------------------------|| | ||
| // -- Private Methods -------------------------------------------------------------------|| | ||
| // --------------------------------------------------------------------------------------|| | ||
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| /** | ||
| * Appends the given text. | ||
| */ | ||
| private boolean appendText(final String text, final StringBuilder sb) { | ||
| if (sb != null) { | ||
| if (text != null && text.indexOf(":annotation") < 0 && text.indexOf(":documentation") < 0) { | ||
| sb.append(text); | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
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| /** | ||
| * Appends the given element. | ||
| */ | ||
| private boolean appendText(final String indent, final Element element, final StringBuilder sb) { | ||
| if (sb != null) { | ||
| if (element.getTagName().indexOf(":annotation") < 0 && | ||
| element.getTagName().indexOf(":documentation") < 0) { | ||
| sb.append(String.format(ELEMENT_LOG, indent, | ||
| element.getTagName(), element.getAttribute("name"))); | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
| } |
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