java.lang.Object | |
↳ | org.springframework.jdbc.support.JdbcUtils |
Generic utility methods for working with JDBC. Mainly for internal use within the framework, but also useful for custom JDBC access code.
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int | TYPE_UNKNOWN | Constant that indicates an unknown (or unspecified) SQL type. |
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Public Methods | |||||||||||
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Close the given JDBC Connection and ignore any thrown exception.
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Close the given JDBC ResultSet and ignore any thrown exception.
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Close the given JDBC Statement and ignore any thrown exception.
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Extract a common name for the database in use even if various drivers/platforms provide varying names.
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Convert a column name with underscores to the corresponding property name using "camel case".
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Call the specified method on DatabaseMetaData for the given DataSource,
and extract the invocation result.
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Extract database meta data via the given DatabaseMetaDataCallback.
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Retrieve a JDBC column value from a ResultSet, using the most appropriate
value type.
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Retrieve a JDBC column value from a ResultSet, using the specified value type.
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Check whether the given SQL type is numeric.
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Determine the column name to use.
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Return whether the given JDBC driver supports JDBC 2.0 batch updates.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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Constant that indicates an unknown (or unspecified) SQL type.
Close the given JDBC Connection and ignore any thrown exception. This is useful for typical finally blocks in manual JDBC code.
con | the JDBC Connection to close (may be null )
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Close the given JDBC ResultSet and ignore any thrown exception. This is useful for typical finally blocks in manual JDBC code.
rs | the JDBC ResultSet to close (may be null )
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Close the given JDBC Statement and ignore any thrown exception. This is useful for typical finally blocks in manual JDBC code.
stmt | the JDBC Statement to close (may be null )
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Extract a common name for the database in use even if various drivers/platforms provide varying names.
source | the name as provided in database metedata |
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Convert a column name with underscores to the corresponding property name using "camel case". A name like "customer_number" would match a "customerNumber" property name.
name | the column name to be converted |
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Call the specified method on DatabaseMetaData for the given DataSource, and extract the invocation result.
dataSource | the DataSource to extract meta data for |
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metaDataMethodName | the name of the DatabaseMetaData method to call |
MetaDataAccessException | if we couldn't access the DatabaseMetaData or failed to invoke the specified method |
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Extract database meta data via the given DatabaseMetaDataCallback.
This method will open a connection to the database and retrieve the database metadata. Since this method is called before the exception translation feature is configured for a datasource, this method can not rely on the SQLException translation functionality.
Any exceptions will be wrapped in a MetaDataAccessException. This is a checked exception and any calling code should catch and handle this exception. You can just log the error and hope for the best, but there is probably a more serious error that will reappear when you try to access the database again.
dataSource | the DataSource to extract metadata for |
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action | callback that will do the actual work |
processMetaData
methodMetaDataAccessException | if meta data access failed |
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Retrieve a JDBC column value from a ResultSet, using the most appropriate value type. The returned value should be a detached value object, not having any ties to the active ResultSet: in particular, it should not be a Blob or Clob object but rather a byte array respectively String representation.
Uses the getObject(index)
method, but includes additional "hacks"
to get around Oracle 10g returning a non-standard object for its TIMESTAMP
datatype and a java.sql.Date
for DATE columns leaving out the
time portion: These columns will explicitly be extracted as standard
java.sql.Timestamp
object.
rs | is the ResultSet holding the data |
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index | is the column index |
SQLException | if thrown by the JDBC API |
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Timestamp
Retrieve a JDBC column value from a ResultSet, using the specified value type.
Uses the specifically typed ResultSet accessor methods, falling back to
getResultSetValue(java.sql.ResultSet, int)
for unknown types.
Note that the returned value may not be assignable to the specified required type, in case of an unknown type. Calling code needs to deal with this case appropriately, e.g. throwing a corresponding exception.
rs | is the ResultSet holding the data |
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index | is the column index |
requiredType | the required value type (may be null ) |
SQLException | if thrown by the JDBC API |
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Check whether the given SQL type is numeric.
sqlType | the SQL type to be checked |
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Determine the column name to use. The column name is determined based on a lookup using ResultSetMetaData.
This method implementation takes into account recent clarifications expressed in the JDBC 4.0 specification:
columnLabel - the label for the column specified with the SQL AS clause. If the SQL AS clause was not specified, then the label is the name of the column.
resultSetMetaData | the current meta data to use |
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columnIndex | the index of the column for the look up |
SQLException | in case of lookup failure |
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Return whether the given JDBC driver supports JDBC 2.0 batch updates.
Typically invoked right before execution of a given set of statements: to decide whether the set of SQL statements should be executed through the JDBC 2.0 batch mechanism or simply in a traditional one-by-one fashion.
Logs a warning if the "supportsBatchUpdates" methods throws an exception
and simply returns false
in that case.
con | the Connection to check |
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