Package org.apache.derby.impl.jdbc

Class Util

  • public abstract class Util
extends java.lang.Object
    This class understands the message protocol and looks up SQLExceptions based on keys, so that the Local JDBC driver's messages can be localized. REMIND: May want to investigate putting some of this in the protocol side, for the errors that any Derby JDBC driver might return. The ASSERT mechanism is a wrapper of the basic services, to ensure that failed asserts at this level will behave well in a JDBC environment.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static int logSeverityLevel  

    • Constructor Summary

      Constructors 
      Constructor Description
      Util()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void ASSERT​(EmbedConnection conn, boolean mustBeTrue, java.lang.String msg)
      Mimic SanityManager.ASSERT in a JDBC-friendly way, and providing system cleanup for JDBC failures.
      static void checkForSupportedDataType​(int dataType)
      Checks whether a data type is supported and raises a SQLException if it isn't.
      static void checkSupportedRaiseStandard​(int dataType)
      Checks whether a data type is supported and raises a StandardException if it isn't.
      static java.sql.SQLException generateCsSQLException​(java.lang.String error, java.lang.Object... args)  
      (package private) static java.sql.SQLException generateCsSQLException​(java.lang.String error, java.lang.Throwable t, java.lang.Object... args)  
      static java.sql.SQLException generateCsSQLException​(StandardException se)  
      private static boolean isSupportedType​(int dataType)
      Returns false if a data type is not supported for: setObject(int, Object, int) and setObject(int, Object, int, int).
      static java.sql.SQLException javaException​(java.lang.Throwable t)  
      static void logAndThrowSQLException​(java.sql.SQLException se)
      Log SQLException to the error log if the severity exceeds the logSeverityLevel and then throw it.
      private static void logError​(java.lang.String errorMessage, java.lang.Throwable t)  
      static void logSQLException​(java.sql.SQLException se)
      Log an SQLException to the error log or to the console if there is no error log available.
      (package private) static java.io.IOException newIOException​(java.lang.Throwable cause)
      Create an IOException that wraps another Throwable.
      static java.sql.SQLException noCurrentConnection()  
      static java.sql.SQLException notImplemented()  
      static java.sql.SQLException notImplemented​(java.lang.String feature)  
      static java.sql.SQLException policyNotReloaded​(java.lang.Throwable t)  
      (package private) static java.sql.SQLException seeNextException​(java.lang.String messageId, java.sql.SQLException next, java.lang.Throwable cause, java.lang.Object... args)
      Generate an SQLException which points to another SQLException nested within it with setNextException().
      (package private) static java.sql.SQLException setStreamFailure​(java.io.IOException e)  
      static int[] squashLongs​(long[] longs)
      Squash an array of longs into an array of ints
      (package private) static java.sql.SQLException typeMisMatch​(int targetSQLType)  
      static java.lang.String typeName​(int jdbcType)  

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • logSeverityLevel

        private static int logSeverityLevel

    • Constructor Detail

      • Util

        public Util()

    • Method Detail

      • logAndThrowSQLException

        public static void logAndThrowSQLException​(java.sql.SQLException se)
                                    throws java.sql.SQLException
        Log SQLException to the error log if the severity exceeds the logSeverityLevel and then throw it. This method can be used for logging JDBC exceptions to derby.log DERBY-1191.
        Parameters:
        se - SQLException to log and throw
        Throws:
        java.sql.SQLException

      • logSQLException

        public static void logSQLException​(java.sql.SQLException se)
        Log an SQLException to the error log or to the console if there is no error log available. This method could perhaps be optimized to have a static shared ErrorStringBuilder and synchronize the method, but this works for now.
        Parameters:
        se - SQLException to log

      • logError

        private static void logError​(java.lang.String errorMessage,
                             java.lang.Throwable t)

      • ASSERT

        public static void ASSERT​(EmbedConnection conn,
                          boolean mustBeTrue,
                          java.lang.String msg)
                   throws java.sql.SQLException
        Mimic SanityManager.ASSERT in a JDBC-friendly way, and providing system cleanup for JDBC failures. We need the connection to do cleanup...
        Throws:
        java.sql.SQLException - the exception

      • checkForSupportedDataType

        public static void checkForSupportedDataType​(int dataType)
                                      throws java.sql.SQLException
        Checks whether a data type is supported and raises a SQLException if it isn't.
        Throws:
        java.sql.SQLException

      • checkSupportedRaiseStandard

        public static void checkSupportedRaiseStandard​(int dataType)
                                        throws StandardException
        Checks whether a data type is supported and raises a StandardException if it isn't.
        Throws:
        StandardException

      • isSupportedType

        private static boolean isSupportedType​(int dataType)
        Returns false if a data type is not supported for: setObject(int, Object, int) and setObject(int, Object, int, int).
        Parameters:
        dataType - the data type to check

      • generateCsSQLException

        public static java.sql.SQLException generateCsSQLException​(java.lang.String error,
                                                           java.lang.Object... args)

      • generateCsSQLException

        static java.sql.SQLException generateCsSQLException​(java.lang.String error,
                                                    java.lang.Throwable t,
                                                    java.lang.Object... args)

      • generateCsSQLException

        public static java.sql.SQLException generateCsSQLException​(StandardException se)

      • noCurrentConnection

        public static java.sql.SQLException noCurrentConnection()

      • seeNextException

        static java.sql.SQLException seeNextException​(java.lang.String messageId,
                                              java.sql.SQLException next,
                                              java.lang.Throwable cause,
                                              java.lang.Object... args)
        Generate an SQLException which points to another SQLException nested within it with setNextException().
        Parameters:
        messageId - message id
        next - the next SQLException, possibly null
        cause - the underlying exception, possibly null
        args - the arguments to the message creation
        Returns:
        an SQLException wrapping another SQLException

      • javaException

        public static java.sql.SQLException javaException​(java.lang.Throwable t)

      • policyNotReloaded

        public static java.sql.SQLException policyNotReloaded​(java.lang.Throwable t)

      • notImplemented

        public static java.sql.SQLException notImplemented()

      • notImplemented

        public static java.sql.SQLException notImplemented​(java.lang.String feature)

      • setStreamFailure

        static java.sql.SQLException setStreamFailure​(java.io.IOException e)

      • typeMisMatch

        static java.sql.SQLException typeMisMatch​(int targetSQLType)

      • squashLongs

        public static int[] squashLongs​(long[] longs)
        Squash an array of longs into an array of ints

      • newIOException

        static java.io.IOException newIOException​(java.lang.Throwable cause)
        Create an IOException that wraps another Throwable.
        Parameters:
        cause - the underlying cause of the error
        Returns:
        an IOException linked to cause

      • typeName

        public static java.lang.String typeName​(int jdbcType)