Bug 180842 Config memory buffer size in data engine execution.
To tuning the performance, it is necessary for DtE to expose API for clients to config the size of memory it used to store the final result set. A new AppContext string, "org.eclipse.birt.data.cache.memory.size" is proposed. The new appcontext entry only accept positive integer as input, the unit of which would be MB.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/i18n/ResourceConstants.java
public final static String CANNOT_GET_DOUBLE_FROM_COLUMN = "odaconsumer.CannotGetDoubleFromColumn";
	public final static String CANNOT_GET_STRING_FROM_COLUMN = "odaconsumer.CannotGetStringFromColumn";
	public final static String CANNOT_GET_BIGDECIMAL_FROM_COLUMN = "odaconsumer.CannotGetBigDecimalFromColumn";
	public final static String CANNOT_GET_DATE_FROM_COLUMN = "odaconsumer.CannotGetDateFromColumn";
	public final static String CANNOT_GET_TIME_FROM_COLUMN = "odaconsumer.CannotGetTimeFromColumn";
	public final static String CANNOT_GET_TIMESTAMP_FROM_COLUMN = "odaconsumer.CannotGetTimestampFromColumn";
	public final static String CANNOT_GET_CLOB_FROM_COLUMN = "odaconsumer.CannotGetClobFromColumn";
	public final static String CANNOT_GET_BLOB_FROM_COLUMN = "odaconsumer.CannotGetBlobFromColumn";
    public final static String CANNOT_GET_BOOLEAN_FROM_COLUMN = "odaconsumer.CannotGetBooleanFromColumn";
	public final static String CANNOT_GET_ROW_POSITION = "odaconsumer.CannotGetRowPosition";
	public final static String CANNOT_CLOSE_RESULT_SET = "odaconsumer.CannotCloseResultSet";
	public final static String CANNOT_GET_PARAMETER_COUNT = "odaconsumer.CannotGetParameterCount";
	public final static String CANNOT_GET_INT_FROM_PARAMETER = "odaconsumer.CannotGetIntFromParameter";
	public final static String CANNOT_GET_DOUBLE_FROM_PARAMETER = "odaconsumer.CannotGetDoubleFromParameter";
	public final static String CANNOT_GET_STRING_FROM_PARAMETER = "odaconsumer.CannotGetStringFromParameter";
	public final static String CANNOT_GET_BIGDECIMAL_FROM_PARAMETER = "odaconsumer.CannotGetBigDecimalFromParameter";
	public final static String CANNOT_GET_DATE_FROM_PARAMETER = "odaconsumer.CannotGetDateFromParameter";
	public final static String CANNOT_GET_TIME_FROM_PARAMETER = "odaconsumer.CannotGetTimeFromParameter";
	public final static String CANNOT_GET_TIMESTAMP_FROM_PARAMETER = "odaconsumer.CannotGetTimestampFromParameter";
	public final static String CANNOT_GET_BLOB_FROM_PARAMETER = "odaconsumer.CannotGetBlobFromParameter";
	public final static String CANNOT_GET_CLOB_FROM_PARAMETER = "odaconsumer.CannotGetClobFromParameter";
    public final static String CANNOT_GET_BOOLEAN_FROM_PARAMETER = "odaconsumer.CannotGetBooleanFromParameter";
	public final static String CANNOT_FIND_IN_PARAMETER = "odaconsumer.CannotFindInParameter";
	public final static String CANNOT_SET_INT_PARAMETER = "odaconsumer.CannotSetIntParameter";
	public final static String CANNOT_SET_DOUBLE_PARAMETER = "odaconsumer.CannotSetDoubleParameter";
	public final static String CANNOT_SET_STRING_PARAMETER = "odaconsumer.CannotSetStringParameter";
	public final static String CANNOT_SET_BIGDECIMAL_PARAMETER = "odaconsumer.CannotSetBigDecimalParameter";
	public final static String CANNOT_SET_DATE_PARAMETER = "odaconsumer.CannotSetDateParameter";
	public final static String CANNOT_SET_TIME_PARAMETER = "odaconsumer.CannotSetTimeParameter";
	public final static String CANNOT_SET_TIMESTAMP_PARAMETER = "odaconsumer.CannotSetTimestampParameter";