Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/meta/StackFrames.java @ 415:7c018f466d6d

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Datacage: Added river parameter to meta data services. flys-artifacts/trunk@1879 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 10 May 2011 12:43:12 +0000
parents fc3cf0ef777e
children e91996b46e3c
rev   line source
372
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1 package de.intevation.flys.artifacts.services.meta;
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2
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3 import java.util.Map;
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4 import java.util.List;
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5 import java.util.HashMap;
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6 import java.util.ArrayList;
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7
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8 public class StackFrames
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9 {
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10 protected List<Map<String, Object>> frames;
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11
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12 public StackFrames() {
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13 frames = new ArrayList<Map<String, Object>>();
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14 }
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15
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16 public StackFrames(Map<String, Object> initialFrame) {
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17 this();
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18 if (initialFrame != null) {
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19 frames.add(new HashMap<String, Object>(initialFrame));
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20 }
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21 }
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22
372
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23 public void enter() {
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24 frames.add(new HashMap<String, Object>());
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25 }
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26
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27 public void leave() {
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28 frames.remove(frames.size()-1);
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29 }
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30
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31 public void put(String key, Object value) {
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32 int N = frames.size();
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33 if (N > 0) {
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34 frames.get(N-1).put(key, value);
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35 }
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36 }
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37
372
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38 public void put(String [] keys, Object [] values) {
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39 Map<String, Object> top = frames.get(frames.size()-1);
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40 for (int i = 0; i < keys.length; ++i) {
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41 top.put(keys[i], values[i]);
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42 }
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43 }
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44
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45 public boolean containsKey(String key) {
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46 for (int i = frames.size()-1; i >= 0; --i) {
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47 if (frames.get(i).containsKey(key)) {
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48 return true;
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49 }
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50 }
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51 return false;
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52 }
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53
372
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54 public Object get(String key) {
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55 return get(key, null);
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56 }
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57
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58 public Object get(String key, Object def) {
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59
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60 for (int i = frames.size()-1; i >= 0; --i) {
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61 Map<String, Object> frame = frames.get(i);
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62 if (frame.containsKey(key)) {
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63 return frame.get(key);
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64 }
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65 }
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66
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67 return def;
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68 }
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69 }
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70 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org