Package org.eclipse.persistence.queries

Examples of org.eclipse.persistence.queries.DataReadQuery

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      * This method called in case there are m_unmappedQueryKeyFields.
      * It creates a query that would fetch the values for this fields from the db.
      */
     public void initUnmappedFieldsQuery(UnitOfWorkImpl uow) {
         if(m_unmappedFieldsQuery == null) {
             m_unmappedFieldsQuery = new DataReadQuery();

             Expression whereClause = null;
             Expression builder = new ExpressionBuilder();
             Iterator<DatabaseField> itPrimaryKey = m_descriptor.getPrimaryKeyFields().iterator();
             while (itPrimaryKey.hasNext()) {
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            } else if (valueToApply.equals(QueryType.DeleteAll)) {
                newQuery = new DeleteAllQuery();
            } else if (valueToApply.equals(QueryType.DataModify)) {
                newQuery = new DataModifyQuery();
            } else if (valueToApply.equals(QueryType.DataRead)) {
                newQuery = new DataReadQuery();
            } else if (valueToApply.equals(QueryType.DirectRead)) {
                newQuery = new DirectReadQuery();
            } else if (valueToApply.equals(QueryType.ValueRead)) {
                newQuery = new ValueReadQuery();
            } else {
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                      xrService.descriptorsByQName.get(type).getAlias()).isAggregateDescriptor() &&
                     !xrService.getORSession().getClassDescriptorForAlias(
                      xrService.descriptorsByQName.get(type).getAlias()).isObjectRelationalDataTypeDescriptor()
                    )) {
                    // data-read query
                    databaseQueryToInitialize = new DataReadQuery();
                }
                else {
                    if (!xrService.descriptorsByQName.containsKey(type)) {
                        // 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 (queryOperation.isSimpleXMLFormat() ||
                    (xrService.descriptorsByQName.containsKey(type) &&
                     xrService.getORSession().getClassDescriptorForAlias(xrService.descriptorsByQName.get(type).getAlias()).isAggregateDescriptor() &&
                     !xrService.getORSession().getClassDescriptorForAlias(xrService.descriptorsByQName.get(type).getAlias()).isObjectRelationalDataTypeDescriptor()
                    )) {
                    // data-read query
                    databaseQueryToInitialize = new DataReadQuery();
                }
                else if (!xrService.descriptorsByQName.containsKey(type)) {
                    // value read query
                    databaseQueryToInitialize = new ValueReadQuery();
                }
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            } else if (valueToApply.equals(QueryType.DeleteAll)) {
                newQuery = new DeleteAllQuery();
            } else if (valueToApply.equals(QueryType.DataModify)) {
                newQuery = new DataModifyQuery();
            } else if (valueToApply.equals(QueryType.DataRead)) {
                newQuery = new DataReadQuery();
            } else if (valueToApply.equals(QueryType.DirectRead)) {
                newQuery = new DirectReadQuery();
            } else if (valueToApply.equals(QueryType.ValueRead)) {
                newQuery = new ValueReadQuery();
            } else {
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                column = field.getName();
                break;
            }                       
        }
        String sql = "SELECT " + column + " FROM " + table.getFullName() + " WHERE " + column + " <> " + column;
        DataReadQuery query = new DataReadQuery(sql);
        query.setMaxRows(1);
        int level = this.session.getSessionLog().getLevel();
        try {
            this.session.getSessionLog().setLevel(SessionLog.OFF);
            this.session.executeQuery(query);
            return true;
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      * This method called in case there are m_unmappedQueryKeyFields.
      * It creates a query that would fetch the values for this fields from the db.
      */
     public void initUnmappedFieldsQuery(UnitOfWorkImpl uow) {
         if(m_unmappedFieldsQuery == null) {
             m_unmappedFieldsQuery = new DataReadQuery();

             Expression whereClause = null;
             Expression builder = new ExpressionBuilder();
             Iterator<DatabaseField> itPrimaryKey = m_descriptor.getPrimaryKeyFields().iterator();
             while (itPrimaryKey.hasNext()) {
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     * initial conversion to modify would loose any read settings that had been
     * set.
     */
    protected void setAsSQLReadQuery() {
        if (getDatabaseQueryInternal().isDataModifyQuery()) {
            DataReadQuery query = new DataReadQuery();
            query.setResultType(DataReadQuery.AUTO);
            query.setIsUserDefined(databaseQuery.isUserDefined());
            query.copyFromQuery(this.databaseQuery);
            this.databaseQuery = query;
        }
    }
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     * initial conversion to modify would loose any read settings that had been
     * set.
     */
    protected void setAsSQLReadQuery() {
        if (getDatabaseQuery().isDataModifyQuery()) {
            DataReadQuery query = new DataReadQuery();
            query.setResultType(DataReadQuery.AUTO);
            query.setIsUserDefined(databaseQuery.isUserDefined());
            query.copyFromQuery(this.databaseQuery);
            this.databaseQuery = query;
        }
    }
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    /**
     * Build a ResultSetMappingQuery from a sql result set mapping name and a
     * stored procedure call.
     */
    public static DatabaseQuery buildStoredProcedureQuery(StoredProcedureCall call, List<String> arguments, Map<String, Object> hints, ClassLoader classLoader) {
        DataReadQuery query = new DataReadQuery();
        query.setResultType(DataReadQuery.AUTO);

        query.setCall(call);
        query.setIsUserDefined(true);

        // apply any query hints
        DatabaseQuery hintQuery = applyHints(hints, query, classLoader);

        // apply any query arguments
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    /**
     * Build a DataReadQuery from a sql string.
     */
    public static DatabaseQuery buildSQLDatabaseQuery(String sqlString, Map<String, Object> hints, ClassLoader classLoader) {
        DataReadQuery query = new DataReadQuery();
        query.setResultType(DataReadQuery.AUTO);
        query.setSQLString(sqlString);
        query.setIsUserDefined(true);

        // apply any query hints
        return applyHints(hints, query, classLoader);
    }
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