Package org.h2.engine

Class Session

  • All Implemented Interfaces:
    java.lang.AutoCloseable, CastDataProvider
    Direct Known Subclasses:
    SessionLocal, SessionRemote
    public abstract class Session
extends java.lang.Object
implements CastDataProvider, java.lang.AutoCloseable
    A local or remote session. A session represents a database connection.

    • Method Detail

      • getClusterServers

        public abstract java.util.ArrayList<java.lang.String> getClusterServers()
        Get the list of the cluster servers for this session.
        Returns:
        A list of "ip:port" strings for the cluster servers in this session.

      • prepareCommand

        public abstract org.h2.command.CommandInterface prepareCommand​(java.lang.String sql,
                                                               int fetchSize)
        Parse a command and prepare it for execution.
        Parameters:
        sql - the SQL statement
        fetchSize - the number of rows to fetch in one step
        Returns:
        the prepared command

      • close

        public abstract void close()
        Roll back pending transactions and close the session.
        Specified by:
        close in interface java.lang.AutoCloseable

      • getTrace

        public abstract org.h2.message.Trace getTrace()
        Get the trace object
        Returns:
        the trace object

      • isClosed

        public abstract boolean isClosed()
        Check if close was called.
        Returns:
        if the session has been closed

      • getDataHandler

        public abstract org.h2.store.DataHandler getDataHandler()
        Get the data handler object.
        Returns:
        the data handler

      • hasPendingTransaction

        public abstract boolean hasPendingTransaction()
        Check whether this session has a pending transaction.
        Returns:
        true if it has

      • cancel

        public abstract void cancel()
        Cancel the current or next command (called when closing a connection).

      • getAutoCommit

        public abstract boolean getAutoCommit()
        Check if this session is in auto-commit mode.
        Returns:
        true if the session is in auto-commit mode

      • setAutoCommit

        public abstract void setAutoCommit​(boolean autoCommit)
        Set the auto-commit mode. This call doesn't commit the current transaction.
        Parameters:
        autoCommit - the new value

      • addTemporaryLob

        public abstract org.h2.value.ValueLob addTemporaryLob​(org.h2.value.ValueLob v)
        Add a temporary LOB, which is closed when the session commits.
        Parameters:
        v - the value
        Returns:
        the specified value

      • isRemote

        public abstract boolean isRemote()
        Check if this session is remote or embedded.
        Returns:
        true if this session is remote

      • setCurrentSchemaName

        public abstract void setCurrentSchemaName​(java.lang.String schema)
        Set current schema.
        Parameters:
        schema - the schema name

      • getCurrentSchemaName

        public abstract java.lang.String getCurrentSchemaName()
        Get current schema.
        Returns:
        the current schema name

      • setNetworkConnectionInfo

        public abstract void setNetworkConnectionInfo​(org.h2.util.NetworkConnectionInfo networkConnectionInfo)
        Sets the network connection information if possible.
        Parameters:
        networkConnectionInfo - the network connection information

      • getIsolationLevel

        public abstract IsolationLevel getIsolationLevel()
        Returns the isolation level.
        Returns:
        the isolation level

      • setIsolationLevel

        public abstract void setIsolationLevel​(IsolationLevel isolationLevel)
        Sets the isolation level.
        Parameters:
        isolationLevel - the isolation level to set

      • getStaticSettings

        public abstract Session.StaticSettings getStaticSettings()
        Returns static settings. These settings cannot be changed during lifecycle of session.
        Returns:
        static settings

      • getDynamicSettings

        public abstract Session.DynamicSettings getDynamicSettings()
        Returns dynamic settings. These settings can be changed during lifecycle of session.
        Returns:
        dynamic settings

      • getDatabaseMeta

        public abstract org.h2.jdbc.meta.DatabaseMeta getDatabaseMeta()
        Returns database meta information.
        Returns:
        database meta information

      • isOldInformationSchema

        public abstract boolean isOldInformationSchema()
        Returns whether INFORMATION_SCHEMA contains old-style tables.
        Returns:
        whether INFORMATION_SCHEMA contains old-style tables

      • readSessionState

        public void readSessionState()
        Read the session state if necessary.

      • setThreadLocalSession

        public Session setThreadLocalSession()
        Sets this session as thread local session, if this session is a local session.
        Returns:
        old thread local session, or null

      • resetThreadLocalSession

        public void resetThreadLocalSession​(Session oldSession)
        Resets old thread local session.
        Parameters:
        oldSession - the old thread local session, or null