Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/templating/StackFrames.java @ 998:b81626b10cb7
Datacage: Moved templating in a better suited package.
flys-artifacts/trunk@2434 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Mon, 01 Aug 2011 08:31:09 +0000 |
| parents | |
| children | 5cb84ceee2a0 |
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| 997:4c82609824c8 | 998:b81626b10cb7 |
|---|---|
| 1 package de.intevation.flys.artifacts.datacage.templating; | |
| 2 | |
| 3 import java.util.Map; | |
| 4 import java.util.List; | |
| 5 import java.util.HashMap; | |
| 6 import java.util.ArrayList; | |
| 7 | |
| 8 import javax.xml.xpath.XPathVariableResolver; | |
| 9 | |
| 10 import javax.xml.namespace.QName; | |
| 11 | |
| 12 import org.apache.log4j.Logger; | |
| 13 | |
| 14 public class StackFrames | |
| 15 implements XPathVariableResolver | |
| 16 { | |
| 17 private static Logger log = Logger.getLogger(StackFrames.class); | |
| 18 | |
| 19 protected List<Map<String, Object>> frames; | |
| 20 | |
| 21 public StackFrames() { | |
| 22 frames = new ArrayList<Map<String, Object>>(); | |
| 23 } | |
| 24 | |
| 25 public StackFrames(Map<String, Object> initialFrame) { | |
| 26 this(); | |
| 27 if (initialFrame != null) { | |
| 28 frames.add(new HashMap<String, Object>(initialFrame)); | |
| 29 } | |
| 30 } | |
| 31 | |
| 32 public void enter() { | |
| 33 frames.add(new HashMap<String, Object>()); | |
| 34 } | |
| 35 | |
| 36 public void leave() { | |
| 37 frames.remove(frames.size()-1); | |
| 38 } | |
| 39 | |
| 40 public void put(String key, Object value) { | |
| 41 int N = frames.size(); | |
| 42 if (N > 0) { | |
| 43 frames.get(N-1).put(key, value); | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 public void put(String [] keys, Object [] values) { | |
| 48 Map<String, Object> top = frames.get(frames.size()-1); | |
| 49 for (int i = 0; i < keys.length; ++i) { | |
| 50 top.put(keys[i], values[i]); | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 public boolean containsKey(String key) { | |
| 55 for (int i = frames.size()-1; i >= 0; --i) { | |
| 56 if (frames.get(i).containsKey(key)) { | |
| 57 return true; | |
| 58 } | |
| 59 } | |
| 60 return false; | |
| 61 } | |
| 62 | |
| 63 public Object get(String key) { | |
| 64 return get(key, null); | |
| 65 } | |
| 66 | |
| 67 public Object get(String key, Object def) { | |
| 68 | |
| 69 for (int i = frames.size()-1; i >= 0; --i) { | |
| 70 Map<String, Object> frame = frames.get(i); | |
| 71 if (frame.containsKey(key)) { | |
| 72 return frame.get(key); | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 return def; | |
| 77 } | |
| 78 | |
| 79 @Override | |
| 80 public Object resolveVariable(QName variableName) { | |
| 81 if (log.isDebugEnabled()) { | |
| 82 log.debug("resolve var: " + variableName); | |
| 83 } | |
| 84 return get(variableName.getLocalPart()); | |
| 85 } | |
| 86 } | |
| 87 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |