How to use

get

method

in

org.mapsforge.core.util.LRUCache

/**
 * Matches a node with the given parameters against this RenderTheme.
 *
 * @param renderCallback the callback implementation which will be executed on each match.
 * @param renderContext
 * @param poi            the point of interest.
 */
public synchronized void matchNode(RenderCallback renderCallback, final RenderContext renderContext, PointOfInterest poi) {
  MatchingCacheKey matchingCacheKey = new MatchingCacheKey(poi.tags, renderContext.rendererJob.tile.zoomLevel, Closed.NO);
  List<RenderInstruction> matchingList = this.poiMatchingCache.get(matchingCacheKey);
  if (matchingList != null) {
    // cache hit
    for (int i = 0, n = matchingList.size(); i < n; ++i) {
      matchingList.get(i).renderNode(renderCallback, renderContext, poi);
    }
    return;
  }
  // cache miss
  matchingList = new ArrayList<RenderInstruction>();
  for (int i = 0, n = this.rulesList.size(); i < n; ++i) {
    this.rulesList.get(i).matchNode(renderCallback, renderContext, matchingList, poi);
  }
  this.poiMatchingCache.put(matchingCacheKey, matchingList);
}

private synchronized void matchWay(RenderCallback renderCallback, final RenderContext renderContext, Closed closed, PolylineContainer way) {
  MatchingCacheKey matchingCacheKey = new MatchingCacheKey(way.getTags(), way.getUpperLeft().zoomLevel, closed);
  List<RenderInstruction> matchingList = this.wayMatchingCache.get(matchingCacheKey);
  if (matchingList != null) {
    // cache hit
    for (int i = 0, n = matchingList.size(); i < n; ++i) {
      matchingList.get(i).renderWay(renderCallback, renderContext, way);
    }
    return;
  }
  // cache miss
  matchingList = new ArrayList<RenderInstruction>();
  for (int i = 0, n = this.rulesList.size(); i < n; ++i) {
    this.rulesList.get(i).matchWay(renderCallback, way, way.getUpperLeft(), closed, matchingList, renderContext);
  }
  this.wayMatchingCache.put(matchingCacheKey, matchingList);
}

@Test
public void lruCacheTest() {
  LRUCache<String, String> lruCache = createLRUCache(2);
  lruCache.put(KEY1, VALUE1);
  Assert.assertEquals(VALUE1, lruCache.get(KEY1));
  Assert.assertFalse(lruCache.containsKey(KEY2));
  Assert.assertFalse(lruCache.containsKey(KEY3));
  lruCache.put(KEY2, VALUE2);
  Assert.assertEquals(VALUE1, lruCache.get(KEY1));
  Assert.assertEquals(VALUE2, lruCache.get(KEY2));
  Assert.assertFalse(lruCache.containsKey(KEY3));
  lruCache.put(KEY3, VALUE3);
  Assert.assertFalse(lruCache.containsKey(KEY1));
  Assert.assertEquals(VALUE2, lruCache.get(KEY2));
  Assert.assertEquals(VALUE3, lruCache.get(KEY3));
  lruCache.put(KEY1, VALUE1);
  Assert.assertEquals(VALUE1, lruCache.get(KEY1));
  Assert.assertFalse(lruCache.containsKey(KEY2));
  Assert.assertEquals(VALUE3, lruCache.get(KEY3));
}

/**
 * Matches a node with the given parameters against this RenderTheme.
 *
 * @param renderCallback the callback implementation which will be executed on each match.
 * @param renderContext
 * @param poi            the point of interest.
 */
public synchronized void matchNode(RenderCallback renderCallback, final RenderContext renderContext, PointOfInterest poi) {
  MatchingCacheKey matchingCacheKey = new MatchingCacheKey(poi.tags, renderContext.rendererJob.tile.zoomLevel, Closed.NO);
  List<RenderInstruction> matchingList = this.poiMatchingCache.get(matchingCacheKey);
  if (matchingList != null) {
    // cache hit
    for (int i = 0, n = matchingList.size(); i < n; ++i) {
      matchingList.get(i).renderNode(renderCallback, renderContext, poi);
    }
    return;
  }
  // cache miss
  matchingList = new ArrayList<RenderInstruction>();
  for (int i = 0, n = this.rulesList.size(); i < n; ++i) {
    this.rulesList.get(i).matchNode(renderCallback, renderContext, matchingList, poi);
  }
  this.poiMatchingCache.put(matchingCacheKey, matchingList);
}

private synchronized void matchWay(RenderCallback renderCallback, final RenderContext renderContext, Closed closed, PolylineContainer way) {
  MatchingCacheKey matchingCacheKey = new MatchingCacheKey(way.getTags(), way.getUpperLeft().zoomLevel, closed);
  List<RenderInstruction> matchingList = this.wayMatchingCache.get(matchingCacheKey);
  if (matchingList != null) {
    // cache hit
    for (int i = 0, n = matchingList.size(); i < n; ++i) {
      matchingList.get(i).renderWay(renderCallback, renderContext, way);
    }
    return;
  }
  // cache miss
  matchingList = new ArrayList<RenderInstruction>();
  for (int i = 0, n = this.rulesList.size(); i < n; ++i) {
    this.rulesList.get(i).matchWay(renderCallback, way, way.getUpperLeft(), closed, matchingList, renderContext);
  }
  this.wayMatchingCache.put(matchingCacheKey, matchingList);
}