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added synchonization to the open method

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Former-commit-id: 8be1fcc1b96744dbf4d4f5754f2402be33ed4032
This commit is contained in:
Jeremy Long
2014-12-28 06:43:45 -05:00
parent 2c7ab297d7
commit 943a9ea97e
1 changed files with 15 additions and 13 deletions
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28
dependency-check-core/src/main/java/org/owasp/dependencycheck/data/cpe/CpeMemoryIndex.java
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@@ -62,7 +62,7 @@ public final class CpeMemoryIndex {
/**
* singleton instance.
*/
private static CpeMemoryIndex instance = new CpeMemoryIndex();
private static final CpeMemoryIndex INSTANCE = new CpeMemoryIndex();
/**
* private constructor for singleton.
@@ -76,7 +76,7 @@ public final class CpeMemoryIndex {
* @return the instance of the CpeMemoryIndex
*/
public static CpeMemoryIndex getInstance() {
return instance;
return INSTANCE;
}
/**
* The in memory Lucene index.
@@ -114,18 +114,20 @@ public final class CpeMemoryIndex {
* @throws IndexException thrown if there is an error creating the index
*/
public void open(CveDB cve) throws IndexException {
if (!openState) {
index = new RAMDirectory();
buildIndex(cve);
try {
indexReader = DirectoryReader.open(index);
} catch (IOException ex) {
throw new IndexException(ex);
synchronized (INSTANCE) {
if (!openState) {
index = new RAMDirectory();
buildIndex(cve);
try {
indexReader = DirectoryReader.open(index);
} catch (IOException ex) {
throw new IndexException(ex);
}
indexSearcher = new IndexSearcher(indexReader);
searchingAnalyzer = createSearchingAnalyzer();
queryParser = new QueryParser(LuceneUtils.CURRENT_VERSION, Fields.DOCUMENT_KEY, searchingAnalyzer);
openState = true;
}
indexSearcher = new IndexSearcher(indexReader);
searchingAnalyzer = createSearchingAnalyzer();
queryParser = new QueryParser(LuceneUtils.CURRENT_VERSION, Fields.DOCUMENT_KEY, searchingAnalyzer);
openState = true;
}
}
/**