Package org.eclipse.persistence.internal.databaseaccess

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

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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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        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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    public DatabaseCall selectResultSet() throws DatabaseException {
        try {
            // For CR 2923 must move to session we will execute call on now
            // so correct DatasourcePlatform used by translate.       
            AbstractSession sessionToUse = this.query.getExecutionSession();
            DatabaseCall clonedCall = (DatabaseCall)this.call.clone();
            clonedCall.setQuery(this.query);
            clonedCall.translate(this.query.getTranslationRow(), getModifyRow(), sessionToUse);
            clonedCall.returnCursor();
            return (DatabaseCall)sessionToUse.executeCall(clonedCall, this.query.getTranslationRow(), this.query);
        } catch (java.lang.ClassCastException e) {
            throw QueryException.invalidDatabaseCall(this.call);
        }
    }
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     */
    public void prepareInsertObject() {
        if (hasMultipleCalls()) {
            int size = this.calls.size();
            for (int index = 0; index < size; index++) {
                DatabaseCall call = (DatabaseCall)this.calls.get(index);
                if (!call.isReturnSet()) {
                    call.returnNothing();
                }
            }
        } else {
            if (!this.call.isReturnSet()) {
                this.call.returnNothing();
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     */
    public void prepareUpdateObject() {
        if (hasMultipleCalls()) {
            int size = this.calls.size();
            for (int index = 0; index < size; index++) {
                DatabaseCall call = (DatabaseCall)this.calls.get(index);
                if (!call.isReturnSet()) {
                    call.returnNothing();
                }
            }
        } else if (getCall() != null) {
            if (!call.isReturnSet()) {
                this.call.returnNothing();
            }
        }
        prepareCall();
    }
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     * so it should refer only to the attributes that cannot be altered without re-preparing the query.
     * If the query is a clone and the original has been already prepared
     * this method will be called to set a (transient and therefore set to null) usesResultSetAccessOptimization attribute.
     */
    public boolean supportsResultSetAccessOptimizationOnPrepare() {
        DatabaseCall call = getCall();
        return ((call != null) && call.getReturnsResultSet()) && // must return ResultSet
            (!hasJoining() || !this.joinedAttributeManager.isToManyJoin()) &&
            (!this.descriptor.hasInheritance() ||
                    !this.descriptor.getInheritancePolicy().hasClassExtractor() &&  // ClassExtractor requires the whole row
                    (shouldOuterJoinSubclasses() || !this.descriptor.getInheritancePolicy().requiresMultipleTableSubclassRead() || this.descriptor.getInheritancePolicy().hasView())) &&  // don't know how to handle select class type call - ResultSet optimization breaks it.
            (this.batchFetchPolicy == null || !this.batchFetchPolicy.isIN());  // batchFetchPolicy.isIN() requires all rows up front - can't support it
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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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        if (getQueryId() == 0) {
            setQueryId(getSession().getNextQueryId());
        }

        if (getCall().isExecuteUpdate()) {
            DatabaseCall call = ((StoredProcedureCall) getQueryMechanism().execute());
            setExecutionTime(System.currentTimeMillis());
            return call;
        } else {
            Vector rows = getQueryMechanism().executeSelect();
            setExecutionTime(System.currentTimeMillis());
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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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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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