Examples of LargeObjectManager

org.postgresql.largeobject.LargeObjectManager
This class implements the large object interface to org.postgresql.
It provides methods that allow client code to create, open and delete large objects from the database. When opening an object, an instance of org.postgresql.largeobject.LargeObject is returned, and its methods then allow access to the object.
This class can only be created by org.postgresql.Connection
To get access to this class, use the following segment of code:
```
 import org.postgresql.largeobject.*; Connection  conn; LargeObjectManager lobj; ... code that opens a connection ... lobj = ((org.postgresql.PGConnection)myconn).getLargeObjectAPI(); 
```
Normally, client code would use the getAsciiStream, getBinaryStream, or getUnicodeStream methods in ResultSet, or setAsciiStream, setBinaryStream, or setUnicodeStream methods in PreparedStatement to access Large Objects.
However, sometimes lower level access to Large Objects are required, that are not supported by the JDBC specification.
Refer to org.postgresql.largeobject.LargeObject on how to manipulate the contents of a Large Object. @see java.sql.ResultSet#getAsciiStream @see java.sql.ResultSet#getBinaryStream @see java.sql.ResultSet#getUnicodeStream @see java.sql.PreparedStatement#setAsciiStream @see java.sql.PreparedStatement#setBinaryStream @see java.sql.PreparedStatement#setUnicodeStream

Examples of org.postgresql.largeobject.LargeObjectManager

            int oid = res.getInt(1);
            if (oid != -1) {
                conn.setAutoCommit(false);
                PGConnection pgconn = (PGConnection)conn
                    .getInnermostDelegate();
                LargeObjectManager lom = pgconn.getLargeObjectAPI();
                if (ob != null) {
                    LargeObject lo = lom.open(oid, LargeObjectManager.WRITE);
                    OutputStream os = lo.getOutputStream();
                    copy((InputStream)ob, os);
                    lo.close();
                } else {
                    lom.delete(oid);
                    row.setInt(col, -1);
                }
            } else {
                if (ob != null) {
                    conn.setAutoCommit(false);
                    PGConnection pgconn = (PGConnection)conn
                        .getInnermostDelegate();
                    LargeObjectManager lom = pgconn.getLargeObjectAPI();
                    oid = lom.create();
                    LargeObject lo = lom.open(oid, LargeObjectManager.WRITE);
                    OutputStream os = lo.getOutputStream();
                    copy((InputStream)ob, os);
                    lo.close();
                    row.setInt(col, oid);
                }

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Examples of org.postgresql.largeobject.LargeObjectManager

            int oid = res.getInt(1);
            if (oid != -1) {
                conn.setAutoCommit(false);
                PGConnection pgconn = (PGConnection)conn
                    .getInnermostDelegate();
                LargeObjectManager lom = pgconn.getLargeObjectAPI();
                lom.delete(oid);
            }
        } finally {
            if (res != null)
                try { res.close (); } catch (SQLException e) {}
            if (stmnt != null)

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Examples of org.postgresql.largeobject.LargeObjectManager

     * @exception SQLException by LargeObject when initialising for first time
     */
    public LargeObjectManager getLargeObjectAPI() throws SQLException
    {
        if (largeobject == null)
            largeobject = new LargeObjectManager(this);
        return largeobject;
    }

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Examples of org.postgresql.largeobject.LargeObjectManager

    private ArrayList subLOs;


    public AbstractJdbc2BlobClob(BaseConnection conn, long oid) throws SQLException
    {
        this.conn = conn;
        LargeObjectManager lom = conn.getLargeObjectAPI();
        this.lo = lom.open(oid);
        subLOs = new ArrayList();
    }

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Examples of org.postgresql.largeobject.LargeObjectManager

     */
    public LargeObjectManager getLargeObjectAPI() throws SQLException
    {
        checkClosed();
        if (largeobject == null)
            largeobject = new LargeObjectManager(this);
        return largeobject;
    }

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