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annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FastCrossSectionLineFactory.java @ 2119:dc28ea60b53d

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Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines. flys-artifacts/trunk@3689 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 16 Jan 2012 15:51:46 +0000
parents
children d626ae185305
rev   line source
2119
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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1 package de.intevation.flys.artifacts.model;
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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2
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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3 import de.intevation.flys.artifacts.cache.CacheFactory;
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4
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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5 import de.intevation.flys.model.CrossSection;
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6 import de.intevation.flys.model.CrossSectionLine;
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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7
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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8 import net.sf.ehcache.Cache;
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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9 import net.sf.ehcache.Element;
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10
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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11 import java.util.List;
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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12
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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14 public class FastCrossSectionLineFactory
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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15 {
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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16 public static final String CACHE_NAME = "fast-cross-section-lines";
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17
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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18 private FastCrossSectionLineFactory() {
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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19 }
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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21 public static FastCrossSectionLine getCrossSectionLine(
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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22 CrossSection cs,
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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23 double km
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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24 ) {
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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25 Cache cache = CacheFactory.getCache(CACHE_NAME);
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26
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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27 if (cache == null) {
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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28 List<CrossSectionLine> lines = cs.getLines(km, km);
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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29 return lines.isEmpty()
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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30 ? null
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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31 : new FastCrossSectionLine(lines.get(0));
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32 }
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33
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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34 String cacheKey = FastCrossSectionChunk.createHashKey(cs, km);
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35
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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36 Element element = cache.get(cacheKey);
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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37
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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38 FastCrossSectionChunk fcsc;
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39
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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40 if (element != null) {
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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41 fcsc = (FastCrossSectionChunk)element.getValue();
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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42 }
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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43 else {
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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44 fcsc = new FastCrossSectionChunk(cs, km);
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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45 element = new Element(cacheKey, fcsc);
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46 cache.put(element);
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47 }
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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48
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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49 return fcsc.getCrossSectionLine(km);
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50 }
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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51 }
dc28ea60b53d Added cached/chunked access to cross section lines. TODO: Use the FastCrossSectionLines.
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52 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org