Package org.apache.ignite.internal.processors.odbc.odbc

Class OdbcUtils

java.lang.Object

org.apache.ignite.internal.processors.odbc.odbc.OdbcUtils

public class OdbcUtils
extends Object

Various ODBC utility methods.

Method Summary

Modifier and Type	Method	Description
static String	addQuotationMarksIfNeeded(String str)	Add quotation marks at the beginning and end of the string.
static Collection<OdbcColumnMeta>	convertMetadata(Collection<GridQueryFieldMetadata> meta)	Convert metadata in collection from GridQueryFieldMetadata to OdbcColumnMeta.
static String	getIgniteTypeFromOdbcType(String odbcDataType)	Lookup Ignite data type corresponding to specific ODBC data type
static String	prepareSchema(String schema)	Prepare client's schema for processing.
static String	preprocessPattern(String ptrn)	Pre-process table or column pattern.
static String	removeQuotationMarksIfNeeded(String str)	Remove quotation marks at the beginning and end of the string if present.
static long	rowsAffected(QueryCursor<List<?>> qryCur)	Get affected rows for statement.
static String	tryRetrieveH2ErrorMessage(Throwable err)	Tries to retrieve H2 engine error message from exception.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

addQuotationMarksIfNeeded

public static String addQuotationMarksIfNeeded(String str)

Add quotation marks at the beginning and end of the string.

Parameters:

str - Input string.

Returns:

String surrounded with quotation marks.

removeQuotationMarksIfNeeded

public static String removeQuotationMarksIfNeeded(String str)

Remove quotation marks at the beginning and end of the string if present.

Parameters:

str - Input string.

Returns:

String without leading and trailing quotation marks.

preprocessPattern

public static String preprocessPattern(String ptrn)

Pre-process table or column pattern.

Parameters:

ptrn - Pattern to pre-process.

Returns:

Processed pattern.

prepareSchema

public static String prepareSchema(String schema)

Prepare client's schema for processing.

Parameters:

schema - Schema.

Returns:

Prepared schema.

getIgniteTypeFromOdbcType

public static String getIgniteTypeFromOdbcType(String odbcDataType)

Lookup Ignite data type corresponding to specific ODBC data type

Parameters:

odbcDataType - ODBC data type identifier

Returns:

Ignite data type name

tryRetrieveH2ErrorMessage

public static String tryRetrieveH2ErrorMessage(Throwable err)

Tries to retrieve H2 engine error message from exception. If the exception is not of type "org.h2.jdbc.JdbcSQLException" returns original error message.

Parameters:

err - Exception.

Returns:

Error message.

rowsAffected

public static long rowsAffected(QueryCursor<List<?>> qryCur)

Get affected rows for statement.

Parameters:

qryCur - Cursor.

Returns:

Number of table rows affected, if the query is DML, and -1 otherwise.

convertMetadata

public static Collection<OdbcColumnMeta> convertMetadata(Collection<GridQueryFieldMetadata> meta)

Convert metadata in collection from GridQueryFieldMetadata to OdbcColumnMeta.

Parameters:

meta - Internal query field metadata.

Returns:

Odbc query field metadata.