Example usage for org.springframework.jdbc.support MetaDataAccessException MetaDataAccessException

Introduction

In this page you can find the example usage for org.springframework.jdbc.support MetaDataAccessException MetaDataAccessException.

Prototype

public MetaDataAccessException(String msg) 

Source Link

Document

Constructor for MetaDataAccessException.

Usage

From source file:org.springframework.jdbc.support.JdbcUtils.java

/**
 * Extract database meta data via the given DatabaseMetaDataCallback.
 * <p>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.
 * <p>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.
 * @param dataSource the DataSource to extract metadata for
 * @param action callback that will do the actual work
 * @return object containing the extracted information, as returned by
 * the DatabaseMetaDataCallback's {@code processMetaData} method
 * @throws MetaDataAccessException if meta data access failed
 *//*from www. j a va2  s  . c o  m*/
public static Object extractDatabaseMetaData(DataSource dataSource, DatabaseMetaDataCallback action)
        throws MetaDataAccessException {

    Connection con = null;
    try {
        con = DataSourceUtils.getConnection(dataSource);
        DatabaseMetaData metaData = con.getMetaData();
        if (metaData == null) {
            // should only happen in test environments
            throw new MetaDataAccessException("DatabaseMetaData returned by Connection [" + con + "] was null");
        }
        return action.processMetaData(metaData);
    } catch (CannotGetJdbcConnectionException ex) {
        throw new MetaDataAccessException("Could not get Connection for extracting meta data", ex);
    } catch (SQLException ex) {
        throw new MetaDataAccessException("Error while extracting DatabaseMetaData", ex);
    } catch (AbstractMethodError err) {
        throw new MetaDataAccessException(
                "JDBC DatabaseMetaData method not implemented by JDBC driver - upgrade your driver", err);
    } finally {
        DataSourceUtils.releaseConnection(con, dataSource);
    }
}

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