Examples of org.apache.openjpa.kernel.FinderCache

org.apache.openjpa.kernel.FinderCache
A cache to create and maintain {@link FinderQuery finder queries}. A finder query is a query to find instance of a given class by its primary identity. This cache maintains finder queries by generic identifier of parameterized type K. A cached query by an identifier of parameterized type K. A query can be cached by an identifier and value represented by parameterized type V. Caching results in creating a new instance of FinderQuery FQ from the value V such that FQ can be executed to return a result of parameterized type R. A request to cache may not be successful if this cache determines the value V to be not cachable. Both get() and put() operations can be controlled by the hints associated with FetchConfiguration. The target database query FQ associated to a cached finder query F may depend upon query execution context such as fetch plan or lock group. This cache, by design, does not monitor the context or automatically invalidate an entry when the original query F is executed with context parameters that affect the target query FQ. The user must notify this receiver to invalidate a cached entry when execution context changes in a way that will modify the resultant database language query FQ. One of the built-in mechanism (available in JPA facade) is to set query hints to either invalidate the query entirely or ignore the cached version for the current execution. @see QueryHints#HINT_IGNORE_FINDER @see QueryHints#HINT_INVALIDATE_FINDER @see QueryHints#HINT_RECACHE_FINDER This cache allows customization of whether a query can be cached or not via either explicit marking of certain classes as non-cachable (which is irreversible) or addition/removal of exclusion patterns (which is reversible) @author Pinaki Poddar @since 2.0.0

    private void afterExecuteStatement(Statement stmnt) {
        _stmnts.remove(stmnt);
    }
    
    FinderQueryImpl getFinder(ClassMapping mapping, FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache == null 
             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }

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             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }
    
    boolean cacheFinder(ClassMapping mapping, SelectExecutor select, 
        FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache != null && cache.cache(mapping, select, fetch) != null;
    }

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    private void afterExecuteStatement(Statement stmnt) {
        _stmnts.remove(stmnt);
    }
    
    FinderQueryImpl getFinder(ClassMapping mapping, FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache == null 
             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }

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             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }
    
    boolean cacheFinder(ClassMapping mapping, SelectExecutor select, 
        FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache != null && cache.cache(mapping, select, fetch) != null;
    }

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    private void afterExecuteStatement(Statement stmnt) {
        _stmnts.remove(stmnt);
    }
    
    FinderQueryImpl getFinder(ClassMapping mapping, FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache == null 
             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }

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             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }
    
    boolean cacheFinder(ClassMapping mapping, SelectExecutor select, 
        FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache != null && cache.cache(mapping, select, fetch) != null;
    }

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    private void afterExecuteStatement(Statement stmnt) {
        _stmnts.remove(stmnt);
    }
    
    FinderQueryImpl getFinder(ClassMapping mapping, FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache == null 
             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }

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             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }
    
    boolean cacheFinder(ClassMapping mapping, SelectExecutor select, 
        FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache != null && cache.cache(mapping, select, fetch) != null;
    }

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    private void afterExecuteStatement(Statement stmnt) {
        _stmnts.remove(stmnt);
    }
    
    FinderQueryImpl getFinder(ClassMapping mapping, FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache == null 
             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }

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             ? null : (FinderQueryImpl)cache.get(mapping, fetch);
    }
    
    boolean cacheFinder(ClassMapping mapping, SelectExecutor select, 
        FetchConfiguration fetch) {
        FinderCache cache = getFinderCache();
        return cache != null && cache.cache(mapping, select, fetch) != null;
    }

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org.apache.openjpa.jdbc.kernel.JDBCStoreManager

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