Review

Detector:	MuDetect_CrossProject
Target:	project ' lucene ' version 754
Misuse:	misuse ' 5 '
Tags:

Misuse Details

Details about the known misuse from the MUBench dataset.

Description:	Map.get() and Map.put() are called with different (types of) objects as key. There is another Map, for which the accidentially used key is the correct key.
Fix Description:	(see diff)
Violation Types:	missing/condition/value_or_state
In File:	org/apache/lucene/search/FieldCacheImpl.java
In Method:	get(IndexReader, Object)
Code with Misuse:	class FieldCacheImpl.Cache { public Object get(IndexReader reader, Object key) throws IOException { Map innerCache; Object value; synchronized (readerCache) { innerCache = (Map) readerCache.get(reader); if (innerCache == null) { innerCache = new HashMap(); readerCache.put(reader, innerCache); value = null; } else { value = innerCache.get(key); } if (value == null) { value = new CreationPlaceholder(); innerCache.put(reader, value); } } if (value instanceof CreationPlaceholder) { synchronized (value) { CreationPlaceholder progress = (CreationPlaceholder) value; if (progress.value == null) { progress.value = createValue(reader, key); synchronized (readerCache) { innerCache.put(key, progress.value); } } return progress.value; } } return value; } }

Potential Hits

Findings of the detector that identify an anomaly in the same file and method as the known misuse.

Hit	Rank	Confidence	Confidence String	Pattern Examples	Pattern Support	Pattern Violation	Target Environment Mapping
?	0	0.14583333333333	(pattern support = 6 / 12)(pattern violations = 1 / 2)(overlap = 7.00 / 12.00)	_examples/Sankore/Editeur_Sankore---LENUOS-/latest/checkout/sources/lenuos/editor/src/com/paraschool/editor/server/exporter/ManifestProjectExporter.java#completeZIP(List, Map, File, ZipArchiveOutputStream);_examples/jenkinsci/envinject-plugin/latest/checkout/src/main/java/org/jenkinsci/plugins/envinject/service/PropertiesVariablesRetriever.java#invoke(File, VirtualChannel);_examples/taylorrobert/ProjectM2O/latest/checkout/lib/slick/tools/org/newdawn/slick/tools/hiero/truetype/TTFSubSetFile.java#scanGlyphs(FontFileReader, Map);_examples/taylorrobert/ProjectM2O/latest/checkout/lib/slick/tools/org/newdawn/slick/tools/hiero/BMFontUtil.java#save(File);_examples/Sankore/Editeur_Sankore---LENUOS-/latest/checkout/sources/lenuos/editor-catalog/src/main/java/com/paraschool/editor/catalog/web/models/ResourceModel.java#ResourceModel(Resource, List, String)	6
?	1	0.14583333333333	(pattern support = 7 / 12)(pattern violations = 1 / 2)(overlap = 5.00 / 10.00)	_examples/mojtaba-khallash/dependency-parsing-toolbox/latest/checkout/Source/maltParser/src/org/maltparser/core/syntaxgraph/writer/TigerXMLWriter.java#writeNonTerminals(PhraseStructure);_examples/EMLab/emlab-generation/latest/checkout/emlab-generation/src/main/java/emlab/gen/role/investment/InvestInPowerGenerationTechnologiesStandard.java#act(T);_examples/orbeon/flyingsaucer-old/latest/checkout/src/java/org/xhtmlrenderer/layout/InlineBoxing.java#addOpenInlineBoxes(LayoutContext, LineBox, List, int, Map);_examples/EMLab/emlab-generation/latest/checkout/emlab-generation/src/main/java/emlab/gen/role/investment/InvestInPowerGenerationTechnologiesRole.java#act(T);_examples/EMLab/emlab-generation/latest/checkout/emlab-generation/src/main/java/emlab/gen/role/AbstractEnergyProducerRole.java#predictFuelPrices(long, long, long)	7
?	2	0.14583333333333	(pattern support = 6 / 12)(pattern violations = 1 / 2)(overlap = 7.00 / 12.00)	_examples/Sankore/Editeur_Sankore---LENUOS-/latest/checkout/sources/lenuos/editor/src/com/paraschool/editor/server/exporter/ManifestProjectExporter.java#completeZIP(List, Map, File, ZipArchiveOutputStream);_examples/jenkinsci/envinject-plugin/latest/checkout/src/main/java/org/jenkinsci/plugins/envinject/service/PropertiesVariablesRetriever.java#invoke(File, VirtualChannel);_examples/taylorrobert/ProjectM2O/latest/checkout/lib/slick/tools/org/newdawn/slick/tools/hiero/truetype/TTFSubSetFile.java#scanGlyphs(FontFileReader, Map);_examples/taylorrobert/ProjectM2O/latest/checkout/lib/slick/tools/org/newdawn/slick/tools/hiero/BMFontUtil.java#save(File);_examples/Sankore/Editeur_Sankore---LENUOS-/latest/checkout/sources/lenuos/editor-catalog/src/main/java/com/paraschool/editor/catalog/web/models/ResourceModel.java#ResourceModel(Resource, List, String)	6
?	3	0.14583333333333	(pattern support = 7 / 12)(pattern violations = 1 / 2)(overlap = 5.00 / 10.00)	_examples/mojtaba-khallash/dependency-parsing-toolbox/latest/checkout/Source/maltParser/src/org/maltparser/core/syntaxgraph/writer/TigerXMLWriter.java#writeNonTerminals(PhraseStructure);_examples/EMLab/emlab-generation/latest/checkout/emlab-generation/src/main/java/emlab/gen/role/investment/InvestInPowerGenerationTechnologiesStandard.java#act(T);_examples/orbeon/flyingsaucer-old/latest/checkout/src/java/org/xhtmlrenderer/layout/InlineBoxing.java#addOpenInlineBoxes(LayoutContext, LineBox, List, int, Map);_examples/EMLab/emlab-generation/latest/checkout/emlab-generation/src/main/java/emlab/gen/role/investment/InvestInPowerGenerationTechnologiesRole.java#act(T);_examples/EMLab/emlab-generation/latest/checkout/emlab-generation/src/main/java/emlab/gen/role/AbstractEnergyProducerRole.java#predictFuelPrices(long, long, long)	7