Package org.apache.cayenne.access.util
Class DefaultOperationObserver
java.lang.Object
org.apache.cayenne.access.util.DefaultOperationObserver
- All Implemented Interfaces:
OperationHints
,OperationObserver
- Direct Known Subclasses:
IteratedSelectObserver
public class DefaultOperationObserver extends Object implements OperationObserver
Simple implementation of OperationObserver interface. Useful as a superclass
of other implementations of OperationObserver. This implementation only
tracks transaction events and exceptions.
This operation observer is unsafe to use in application, since it doesn't rethrow the exceptions immediately, and may cause the database to hang.
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Field Summary
Fields Modifier and Type Field Description protected List<Throwable>
globalExceptions
protected Map<Query,Throwable>
queryExceptions
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Constructor Summary
Constructors Constructor Description DefaultOperationObserver()
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Method Summary
Modifier and Type Method Description List<Throwable>
getGlobalExceptions()
Returns a list of global exceptions that occured during data operation run.Map<Query,Throwable>
getQueryExceptions()
Returns a list of exceptions that occured during data operation run by query.boolean
hasExceptions()
Returnstrue
if at least one exception was registered during query execution.boolean
isIteratedResult()
Returnsfalse
.void
nextBatchCount(Query query, int[] resultCount)
Callback method invoked after a batch update is executed.void
nextCount(Query query, int resultCount)
Callback method invoked after an updating query is executed.void
nextGeneratedRows(Query query, ResultIterator keys, ObjectId idToUpdate)
Closes ResultIterator without reading its data.void
nextGlobalException(Exception ex)
Callback method invoked on exceptions that are not tied to a specific query execution, such as JDBC connection exceptions, etc.void
nextQueryException(Query query, Exception ex)
Callback method invoked on exceptions that happen during an execution of a specific query.void
nextRows(Query query, List<?> dataRows)
Callback method invoked for each processed ResultSet.void
nextRows(Query query, ResultIterator it)
Closes ResultIterator without reading its data.void
printExceptions(PrintWriter out)
Prints the information about query and global exceptions.
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Field Details
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globalExceptions
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queryExceptions
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Constructor Details
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DefaultOperationObserver
public DefaultOperationObserver()
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Method Details
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printExceptions
Prints the information about query and global exceptions. -
getGlobalExceptions
Returns a list of global exceptions that occured during data operation run. -
getQueryExceptions
Returns a list of exceptions that occured during data operation run by query. -
hasExceptions
public boolean hasExceptions()Returnstrue
if at least one exception was registered during query execution. -
nextCount
Description copied from interface:OperationObserver
Callback method invoked after an updating query is executed.- Specified by:
nextCount
in interfaceOperationObserver
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nextBatchCount
Description copied from interface:OperationObserver
Callback method invoked after a batch update is executed.- Specified by:
nextBatchCount
in interfaceOperationObserver
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nextRows
Description copied from interface:OperationObserver
Callback method invoked for each processed ResultSet.- Specified by:
nextRows
in interfaceOperationObserver
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nextRows
Closes ResultIterator without reading its data. If you implement a custom subclass, only call super if closing the iterator is what you need.- Specified by:
nextRows
in interfaceOperationObserver
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nextGeneratedRows
Closes ResultIterator without reading its data. If you implement a custom subclass, only call super if closing the iterator is what you need.- Specified by:
nextGeneratedRows
in interfaceOperationObserver
- Since:
- 4.0
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nextQueryException
Description copied from interface:OperationObserver
Callback method invoked on exceptions that happen during an execution of a specific query.- Specified by:
nextQueryException
in interfaceOperationObserver
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nextGlobalException
Description copied from interface:OperationObserver
Callback method invoked on exceptions that are not tied to a specific query execution, such as JDBC connection exceptions, etc.- Specified by:
nextGlobalException
in interfaceOperationObserver
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isIteratedResult
public boolean isIteratedResult()Returnsfalse
.- Specified by:
isIteratedResult
in interfaceOperationHints
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