Package org.eclipse.persistence.internal.databaseaccess

Examples of org.eclipse.persistence.internal.databaseaccess.DatabaseCall

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     * INTERNAL:
     * Prepare the receiver for execution in a session.
     */
    public void prepareForExecution() throws QueryException {
        super.prepareForExecution();
        DatabaseCall databaseCall = this.getCall();
        if ( databaseCall !=null && (databaseCall.shouldIgnoreFirstRowSetting() || databaseCall.shouldIgnoreMaxResultsSetting())){
            AbstractRecord parameters = this.getTranslationRow();
            if (parameters.isEmpty()){
                parameters = new DatabaseRecord();
            }
            //Some DB don't support FirstRow in SELECT statements in spite of supporting MaxResults(Symfoware).
            //We should check FirstRow and MaxResults separately.
            if(databaseCall.shouldIgnoreFirstRowSetting()){
                parameters.add(DatabaseCall.FIRSTRESULT_FIELD, this.getFirstResult());
            }
            if(databaseCall.shouldIgnoreMaxResultsSetting()){
                parameters.add(DatabaseCall.MAXROW_FIELD, session.getPlatform().computeMaxRowsForSQL(this.getFirstResult(), this.getMaxRows()));
            }
            this.setTranslationRow(parameters);
        }
    }
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    public Vector selectAllRowsFromConcreteTable() throws DatabaseException {
        ObjectLevelReadQuery query = (ObjectLevelReadQuery)this.query;
        // PERF: First check the subclass calls cache for the prepared call.
        // Must clear the translation row to avoid in-lining parameters unless not a prepared query.
        boolean shouldPrepare = query.shouldPrepare();
        DatabaseCall call = null;
        if (shouldPrepare) {
            call = query.getConcreteSubclassCalls().get(query.getReferenceClass());
        }
        if (call == null) {
            AbstractRecord translationRow = query.getTranslationRow();
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    public AbstractRecord selectOneRowFromConcreteTable() throws DatabaseException {
        ObjectLevelReadQuery query = (ObjectLevelReadQuery)this.query;
        // PERF: First check the subclass calls cache for the prepared call.
        // Must clear the translation row to avoid in-lining parameters unless not a prepared query.
        boolean shouldPrepare = query.shouldPrepare();
        DatabaseCall call = null;
        if (shouldPrepare) {
            call = query.getConcreteSubclassCalls().get(query.getReferenceClass());
        }
        if (call == null) {
            AbstractRecord translationRow = query.getTranslationRow();
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        writeQuery.setAccessor(accessor);
        //build a select statement form the query
        SQLSelectStatement selectStatement = buildSelectStatementForLocator(writeQuery, dbCall, session);

        //then build a call from the statement
        DatabaseCall call = buildCallFromSelectStatementForLocator(selectStatement, writeQuery, dbCall, session);

        accessor.executeCall(call, call.getQuery().getTranslationRow(), session);
    }
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    /**
    * Build the sql call from the select statement for selecting the locator
    */
    private DatabaseCall buildCallFromSelectStatementForLocator(SQLSelectStatement selectStatement, WriteObjectQuery writeQuery, DatabaseCall dbCall, AbstractSession session) {
        DatabaseCall call = selectStatement.buildCall(session);
        // Locator LOB must not be wrapped (WLS wraps LOBs).
        call.setIsNativeConnectionRequired(this.isNativeConnectionRequired);
       
        //the LOB context must be passed into the new call object
        call.setContexts(dbCall.getContexts());
        //need to explicitly define one row return, otherwise, EL assumes multiple rows return and confuses the accessor
        call.returnOneRow();
        //the query object has to be set in order to access to the platform and login objects
        call.setQuery(writeQuery);
        // prepare it
        call.prepare(session);
        //finally do the translation
        call.translate(writeQuery.getTranslationRow(), writeQuery.getModifyRow(), session);
        return call;
    }
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        }

        //all INSERTs have been executed, time to execute the SELECTs
        try {
            for (Iterator callIt = calls.iterator(); callIt.hasNext();) {
                DatabaseCall dbCall = (DatabaseCall)callIt.next();
                buildAndExecuteCall(dbCall, session);
            }
        } finally {
            //after executing all select calls, need to empty the collection.
            //this is necessary in the nested unit of work cases.
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     * INTERNAL:
     * Prepare the receiver for execution in a session.
     */
    public void prepareForExecution() throws QueryException {
        super.prepareForExecution();
        DatabaseCall databaseCall = this.getCall();
        if ( databaseCall !=null && databaseCall.shouldIgnoreFirstRowMaxResultsSettings() ){
            AbstractRecord parameters = this.getTranslationRow();
            if (parameters.isEmpty()){
                parameters = new DatabaseRecord();
            }
            parameters.add(DatabaseCall.FIRSTRESULT_FIELD, this.getFirstResult());
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        StringWriter writer = new StringWriter();
        writer.write(Helper.getShortClassName(getClass()));
        writer.write("(");

        try {
            DatabaseCall call = buildCall(new DatabaseSessionImpl(new org.eclipse.persistence.sessions.DatabaseLogin()));
            writer.write(call.getSQLString());
        } catch (Exception exception) {
        }
        writer.write(")");

        return writer.toString();
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                        session.getIntegrityChecker().handleError(DescriptorException.noCustomQueryForReturningPolicy(queryTypeName[operation], Helper.getShortClassName(session.getPlatform()), getDescriptor()));
                    }
                } else if (query[operation].getDatasourceCall() instanceof StoredProcedureCall) {
                    // SQLCall with custom SQL calculates its outputRowFields later (in prepare() method) -
                    // that's why SQLCall can't be verified here.
                    DatabaseCall customCall = (DatabaseCall)query[operation].getDatasourceCall();
                    Enumeration outputRowFields = customCall.getOutputRowFields().elements();
                    Collection notFoundInOutputRow = createCollection();
                    notFoundInOutputRow.addAll(main[operation][ALL]);
                    while (outputRowFields.hasMoreElements()) {
                        notFoundInOutputRow.remove(outputRowFields.nextElement());
                    }
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                        session.getIntegrityChecker().handleError(DescriptorException.noCustomQueryForReturningPolicy(queryTypeName[operation], Helper.getShortClassName(session.getPlatform()), getDescriptor()));
                    }
                } else if (query[operation].getDatasourceCall() instanceof StoredProcedureCall) {
                    // SQLCall with custom SQL calculates its outputRowFields later (in prepare() method) -
                    // that's why SQLCall can't be verified here.
                    DatabaseCall customCall = (DatabaseCall)query[operation].getDatasourceCall();
                    Enumeration outputRowFields = customCall.getOutputRowFields().elements();
                    Collection notFoundInOutputRow = createCollection();
                    notFoundInOutputRow.addAll(main[operation][ALL]);
                    while (outputRowFields.hasMoreElements()) {
                        notFoundInOutputRow.remove(outputRowFields.nextElement());
                    }
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Related Classes of org.eclipse.persistence.internal.databaseaccess.DatabaseCall

  • org.eclipse.persistence.descriptors.ClassDescriptor
  • org.eclipse.persistence.descriptors.ReturningPolicy
  • org.eclipse.persistence.internal.expressions.SQLStatement
  • org.eclipse.persistence.internal.helper.LOBValueWriter
  • org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism
  • org.eclipse.persistence.internal.queries.ExpressionQueryMechanism
  • org.eclipse.persistence.internal.sessions.AbstractRecord
  • org.eclipse.persistence.internal.sessions.AbstractSession
  • org.eclipse.persistence.queries.ObjectLevelReadQuery
  • org.eclipse.persistence.queries.ReadQuery
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