Package org.apache.ibatis.cache

Examples of org.apache.ibatis.cache.CacheKey

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    final MappedStatement nestedQuery = configuration.getMappedStatement(nestedQueryId);
    final Class nestedQueryParameterType = nestedQuery.getParameterMap().getType();
    final Object nestedQueryParameterObject = prepareParameterForNestedQuery(rs, propertyMapping, nestedQueryParameterType);
    Object value = null;
    if (nestedQueryParameterObject != null) {
      final CacheKey key = executor.createCacheKey(nestedQuery, nestedQueryParameterObject, RowBounds.DEFAULT);
      if (executor.isCached(nestedQuery, key)) {
        executor.deferLoad(nestedQuery, metaResultObject, property, key);
      } else {
        final ResultLoader resultLoader = new ResultLoader(configuration, executor, nestedQuery, nestedQueryParameterObject, propertyMapping.getJavaType());
        if (configuration.isLazyLoadingEnabled()) {
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  private Object processNestedSelectResult(MappedStatement nestedQuery, ResultMap rm, ResultMapping resultMapping, ResultLoaderRegistry lazyLoader, Object parameterObject, Object resultObject) {
    MetaObject metaResultObject = MetaObject.forObject(resultObject);
    Object value = null;
    try {
      if (parameterObject != null) {
        CacheKey key = executor.createCacheKey(nestedQuery, parameterObject, Executor.NO_ROW_OFFSET, Executor.NO_ROW_LIMIT);
        if (executor.isCached(nestedQuery, key)) {
          executor.deferLoad(nestedQuery, metaResultObject, resultMapping.getProperty(), key);
        } else {
          ResultLoader resultLoader = new ResultLoader(configuration, executor, nestedQuery, parameterObject, resultMapping.getJavaType());
          if (lazyLoader == null) {
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    foundValues.set(value != null || foundValues.get());
    return resultObject;
  }

  private Object processNestedJoinResults(ResultSet rs, List<ResultMapping> resultMappings, Object resultObject) {
    CacheKey previousKey = currentNestedKey;
    try {
      currentNestedKey = createUniqueResultKey(resultMappings, resultObject, currentNestedKey);
      if (nestedResultObjects.containsKey(currentNestedKey)) {
        // Unique key is already known, so get the existing result object and process additional results.
        resultObject = NO_VALUE;
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  private CacheKey createUniqueResultKey(List<ResultMapping> resultMappings, Object resultObject, CacheKey parentCacheKey) {
    if (resultObject == null) {
      return null;
    } else {
      MetaObject metaResultObject = MetaObject.forObject(resultObject);
      CacheKey cacheKey = new CacheKey();
      cacheKey.update(parentCacheKey);
      boolean updated = false;
      if (typeHandlerRegistry.hasTypeHandler(resultObject.getClass())) {
        cacheKey.update(resultObject);
      } else {
        for (ResultMapping resultMapping : resultMappings) {
          if (resultMapping.getNestedQueryId() == null) {
            String propName = resultMapping.getProperty();
            if (propName != null) {
              cacheKey.update(metaResultObject.getValue(propName));
              updated = true;
            }
          }
        }
      }
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      if (cache != null) {
        flushCacheIfRequired(ms);
        cache.getReadWriteLock().readLock().lock();
        try {
          if (ms.isUseCache()) {
            CacheKey key = createCacheKey(ms, parameterObject, rowBounds);
            if (cache.hasKey(key)) {
              return (List) cache.getObject(key);
            } else {
              List list = delegate.query(ms, parameterObject, rowBounds, resultHandler);
              tcm.putObject(cache, key, list);
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    final MappedStatement nestedQuery = configuration.getMappedStatement(nestedQueryId);
    final Class nestedQueryParameterType = nestedQuery.getParameterMap().getType();
    final Object nestedQueryParameterObject = prepareParameterForNestedQuery(rs, propertyMapping, nestedQueryParameterType);
    Object value = null;
    if (nestedQueryParameterObject != null) {
      final CacheKey key = executor.createCacheKey(nestedQuery, nestedQueryParameterObject, RowBounds.DEFAULT);
      if (executor.isCached(nestedQuery, key)) {
        executor.deferLoad(nestedQuery, metaResultObject, property, key);
      } else {
        final ResultLoader resultLoader = new ResultLoader(configuration, executor, nestedQuery, nestedQueryParameterObject, propertyMapping.getJavaType());
        if (configuration.isLazyLoadingEnabled()) {
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  protected void handleRowValues(ResultSet rs, ResultMap resultMap, ResultHandler resultHandler, RowBounds rowBounds) throws SQLException {
    final DefaultResultContext resultContext = new DefaultResultContext();
    skipRows(rs, rowBounds);
    while (shouldProcessMoreRows(rs, resultContext.getResultCount(), rowBounds)) {
      final ResultMap discriminatedResultMap = resolveDiscriminatedResultMap(rs, resultMap);
      final CacheKey rowKey = createRowKey(discriminatedResultMap, rs);
      final boolean knownValue = globalRowValueCache.containsKey(rowKey);
      Object rowValue = getRowValue(rs, discriminatedResultMap, rowKey);
      if (!knownValue) {
        resultContext.nextResultObject(rowValue);
        resultHandler.handleResult(resultContext);
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      if (nestedResultMapId != null) {
        try {
          final ResultMap nestedResultMap = getNestedResultMap(rs, nestedResultMapId);
          final Object collectionProperty = instantiateCollectionPropertyIfAppropriate(resultMapping, metaObject);

          final CacheKey parentRowKey = createRowKey(resultMap, rs);
          final CacheKey rowKey = createRowKey(nestedResultMap, rs);
          final Set<CacheKey> localRowValueCache = getRowValueCache(parentRowKey);
          final boolean knownValue = localRowValueCache.contains(rowKey);
          localRowValueCache.add(rowKey);
          Object rowValue = getRowValue(rs, nestedResultMap, rowKey);
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  //
  // UNIQUE RESULT KEY
  //

  private CacheKey createRowKey(ResultMap resultMap, ResultSet rs) throws SQLException {
    final CacheKey cacheKey = new CacheKey();
    List<ResultMapping> resultMappings = getResultMappingsForRowKey(resultMap);
    cacheKey.update(resultMap.getId());
    if (resultMappings.size() == 0) {
      if (Map.class.isAssignableFrom(resultMap.getType())) {
        createRowKeyForMap(rs, cacheKey);
      } else {
        createRowKeyForUnmappedProperties(resultMap, rs, cacheKey);
      }
    } else {
      createRowKeyForMappedProperties(rs, cacheKey, resultMappings);
    }
    if (cacheKey.getUpdateCount() < 2) {
      return CacheKey.NULL_CACHE_KEY;
    }
    return cacheKey;
  }
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    ErrorContext.instance().resource(ms.getResource()).activity("executing a query").object(ms.getId());
    if (closed) throw new ExecutorException("Executor was closed.");
    List list;
    try {
      queryStack++;
      CacheKey key = createCacheKey(ms, parameter, rowBounds);
      if (localCache.hasKey(key)) {
        list = (List) localCache.getObject(key);
      } else {
        localCache.putObject(key, EXECUTION_PLACEHOLDER);
        try {
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Related Classes of org.apache.ibatis.cache.CacheKey

  • com.github.miemiedev.mybatis.paginator.OffsetLimitInterceptor
  • com.ibatis.sqlmap.CacheStatementTest
  • com.ibatis.sqlmap.engine.cache.CacheKeyTest
  • org.apache.ibatis.executor.BaseExecutor
  • org.apache.ibatis.executor.CachingExecutor
  • org.apache.ibatis.executor.resultset.DefaultResultSetHandler
  • org.apache.ibatis.executor.resultset.FastResultSetHandler
  • org.apache.ibatis.executor.resultset.NestedResultSetHandler
  • org.mybatis.pagination.PaginationExecutor
  • java.util.ArrayList
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