Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/templating/StackFrames.java @ 4496:d8992459b408
Add method to return the facets of an artifact
This methos should be used to get the facets of an artifact instead of accessing
the facets member variable directly.
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Wed, 14 Nov 2012 11:11:04 +0100 |
parents | de0c2bbb27f9 |
children | 2970046fcdca |
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package de.intevation.flys.artifacts.datacage.templating; import java.util.ArrayList; import java.util.Map; import java.util.List; import java.util.HashMap; import java.util.HashSet; import java.util.Set; import javax.xml.xpath.XPathVariableResolver; import javax.xml.namespace.QName; import org.apache.log4j.Logger; public class StackFrames implements XPathVariableResolver { private static Logger log = Logger.getLogger(StackFrames.class); protected List<Map<String, Object>> frames; public StackFrames() { frames = new ArrayList<Map<String, Object>>(); } public StackFrames(Map<String, Object> initialFrame) { this(); if (initialFrame != null) { frames.add(new HashMap<String, Object>(initialFrame)); } } public void enter() { frames.add(new HashMap<String, Object>()); } public void leave() { frames.remove(frames.size()-1); } public void put(String key, Object value) { int N = frames.size(); if (N > 0) { frames.get(N-1).put(key, value); } } public void put(String [] keys, Object [] values) { Map<String, Object> top = frames.get(frames.size()-1); for (int i = 0; i < keys.length; ++i) { top.put(keys[i], values[i]); } } public boolean containsKey(String key) { key = key.toUpperCase(); for (int i = frames.size()-1; i >= 0; --i) { if (frames.get(i).containsKey(key)) { return true; } } return false; } /** * Get element (variable) key. * Returns null if not found. * @param key name to resolve * @return resolution, null if not found. */ public Object get(String key) { return get(key, null); } public boolean getStore(String key, Object [] result) { key = key.toUpperCase(); for (int i = frames.size()-1; i >= 0; --i) { Map<String, Object> frame = frames.get(i); if (frame.containsKey(key)) { result[0] = frame.get(key); return true; } } return false; } public Object get(String key, Object def) { key = key.toUpperCase(); for (int i = frames.size()-1; i >= 0; --i) { Map<String, Object> frame = frames.get(i); if (frame.containsKey(key)) { return frame.get(key); } } return def; } @Override public Object resolveVariable(QName variableName) { if (log.isDebugEnabled()) { log.debug("resolve var: " + variableName); } return get(variableName.getLocalPart()); } public String dump() { StringBuilder sb = new StringBuilder("["); Set<String> already = new HashSet<String>(); boolean first = true; for (int i = frames.size()-1; i >= 0; --i) { Map<String, Object> frame = frames.get(i); for (Map.Entry<String, Object> entry: frame.entrySet()) { if (already.add(entry.getKey())) { if (first) { first = false; } else { sb.append(", "); } sb.append('\'').append(entry.getKey()) .append("'='").append(entry.getValue()).append('\''); } } } return sb.append(']').toString(); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :