Examples of org.eclipse.persistence.queries.ReadAllQuery

org.eclipse.persistence.queries.ReadAllQuery

Purpose: Concrete class for all read queries involving a collection of objects.

Responsibilities: Return a container of the objects generated by the query. Implements the inheritance feature when dealing with abstract descriptors @author Yvon Lavoie @since TOPLink/Java 1.0

     * This method is used to create a query using a EclipseLink by example.
     */
    public javax.persistence.Query createQueryByExample(Object exampleObject) {
        try {
            verifyOpen();
            ReadAllQuery query = new ReadAllQuery(exampleObject.getClass());
            query.setExampleObject(exampleObject);
            return new EJBQueryImpl(query, this);
        } catch (RuntimeException e) {
            setRollbackOnly();
            throw e;
        }

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     * This method is used to create a query using a EclipseLink Call.
     */
    public javax.persistence.Query createQuery(Call call, Class entityClass) {
        try {
            verifyOpen();
            ReadAllQuery query = new ReadAllQuery(entityClass, call);
            return new EJBQueryImpl(query, this);
        } catch (RuntimeException e) {
            setRollbackOnly();
            throw e;
        }

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    /**
     * This method is used to create a query using a EclipseLink Expression and the return type.
     */
    protected DatabaseQuery createQueryInternal(Expression expression, Class resultType) {
        ReadAllQuery query = new ReadAllQuery(resultType);
        query.setSelectionCriteria(expression);
        return query;
    }

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        //this can be null, because either one exists in the query or it will be created
        Hashtable referenceObjectsByKey = null;
        synchronized (query) {
            referenceObjectsByKey = getBatchReadObjects(query, session);
            if (referenceObjectsByKey == null) {
                ReadAllQuery batchQuery = (ReadAllQuery)query;
                ComplexQueryResult complexResult = (ComplexQueryResult)session.executeQuery(batchQuery, argumentRow);
                // Batch query created in ForeignReferenceMapping.prepareNestedBatchQuery without specifying container policy - uses ListContainerPolicy by default.
                List results = (List)complexResult.getResult();
                referenceObjectsByKey = new Hashtable();
                List rows = (List)complexResult.getData();

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    /**
     * INTERNAL:
     * Add additional fields
     */
    protected void postPrepareNestedBatchQuery(ReadQuery batchQuery, ReadAllQuery query) {
        ReadAllQuery mappingBatchQuery = (ReadAllQuery)batchQuery;
        mappingBatchQuery.setShouldIncludeData(true);
        int size = targetForeignKeyFields.size();
        for(int i=0; i < size; i++) {
            mappingBatchQuery.addAdditionalField(targetForeignKeyFields.get(i));
        }        
    }

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                        // data-read query
                        databaseQueryToInitialize = new DataReadQuery();
                    }
                    else {
                        // read-all query for the class mapped to the type
                        databaseQueryToInitialize = new ReadAllQuery(xrService.getTypeClass(type));
                    }
                }
            }
            else {
                if (getOutArguments().size() == 0 && getInOutArguments().size() == 0) {

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        if (type == null) {
            throw new IllegalArgumentException("DynamicHelper.createQuery: Dynamic type not found: " + typeName);
        }


        return new ReadAllQuery(type.getJavaClass());
    }

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    public void setReadAllSQLString(String sqlString) {
        if (sqlString == null) {
            return;
        }


        ReadAllQuery query = new ReadAllQuery();
        query.setSQLString(sqlString);
        setReadAllQuery(query);
    }

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     */
    public void setReadAllCall(Call call) {
        if (call == null) {
            return;
        }
        ReadAllQuery query = new ReadAllQuery();
        query.setCall(call);
        setReadAllQuery(query);
    }

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     * Allow the mapping the do any further batch preparation.
     */
    @Override
    protected void postPrepareNestedBatchQuery(ReadQuery batchQuery, ObjectLevelReadQuery query) {
        super.postPrepareNestedBatchQuery(batchQuery, query);
        ReadAllQuery aggregateBatchQuery = (ReadAllQuery)batchQuery;
        for (DatabaseField relationField : getTargetForeignKeyFields()) {
            aggregateBatchQuery.getAdditionalFields().add(relationField);
        }
    }

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Related Classes of org.eclipse.persistence.queries.ReadAllQuery

org.eclipse.persistence.descriptors.DescriptorQueryManager

org.eclipse.persistence.descriptors.InterfacePolicy

org.eclipse.persistence.dynamic.DynamicHelper

org.eclipse.persistence.internal.descriptors.ObjectBuilder

org.eclipse.persistence.internal.jpa.EJBQueryImpl

org.eclipse.persistence.internal.jpa.EntityManagerImpl

org.eclipse.persistence.internal.jpa.jpql.ReadAllQueryBuilder

org.eclipse.persistence.internal.jpa.jpql.ReadAllQueryVisitor

org.eclipse.persistence.internal.jpa.querydef.CriteriaQueryImpl

org.eclipse.persistence.internal.jpa.QueryHintsHandler$BatchHint

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