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Allow concurrency in AttributeAxisIterator

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This commit is contained in:
Juan Martín Sotuyo Dodero
2016-11-14 00:08:56 -03:00
committed by Andreas Dangel
parent b5ca7baa9a
commit 49e3de4a06
1 changed files with 5 additions and 6 deletions
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11
pmd-core/src/main/java/net/sourceforge/pmd/lang/ast/xpath/AttributeAxisIterator.java
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@ -5,11 +5,10 @@ package net.sourceforge.pmd.lang.ast.xpath;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import net.sourceforge.pmd.lang.ast.Node;
@ -49,8 +48,8 @@ public class AttributeAxisIterator implements Iterator<Attribute> {
private int position;
private Node node;
private static Map<Class<?>, MethodWrapper[]> methodCache =
Collections.synchronizedMap(new HashMap<Class<?>, MethodWrapper[]>());
private static ConcurrentMap<Class<?>, MethodWrapper[]> methodCache =
new ConcurrentHashMap<Class<?>, MethodWrapper[]>();
public AttributeAxisIterator(Node contextNode) {
this.node = contextNode;
@ -62,7 +61,7 @@ public class AttributeAxisIterator implements Iterator<Attribute> {
postFilter.add(new MethodWrapper(element));
}
}
methodCache.put(contextNode.getClass(), postFilter.toArray(new MethodWrapper[postFilter.size()]));
methodCache.putIfAbsent(contextNode.getClass(), postFilter.toArray(new MethodWrapper[postFilter.size()]));
}
this.methodWrappers = methodCache.get(contextNode.getClass());