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Peter's Mega-Patch for JDBC...

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see README_6.3 for list of changes
This commit is contained in:
Marc G. Fournier
1998-01-11 21:14:56 +00:00
parent 4bad5be7bc
commit ba977c086c
13 changed files with 1276 additions and 306 deletions
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122
src/interfaces/jdbc/postgresql/Field.java
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@ -6,10 +6,8 @@ import java.util.*;
import postgresql.*;
/**
* postgresql.Field is a class used to describe fields in a PostgreSQL ResultSet
*
* @version 1.0 15-APR-1997
* @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
* postgresql.Field is a class used to describe fields in a PostgreSQL
* ResultSet
*/
public class Field
{
@ -22,7 +20,7 @@ public class Field
String type_name = null;// The sql type name
/**
* Construct a field based on the information fed to it.
* Construct a field based on the information fed to it.
*
* @param conn the connection this field came from
* @param name the name of the field
@ -37,6 +35,14 @@ public class Field
this.length = length;
}
/**
* @return the oid of this Field's data type
*/
public int getOID()
{
return oid;
}
/**
* the ResultSet and ResultMetaData both need to handle the SQL
* type, which is gained from another query. Note that we cannot
@ -47,47 +53,77 @@ public class Field
*/
public int getSQLType() throws SQLException
{
if (sql_type == -1)
{
ResultSet result = (postgresql.ResultSet)conn.ExecSQL("select typname from pg_type where oid = " + oid);
if (result.getColumnCount() != 1 || result.getTupleCount() != 1)
throw new SQLException("Unexpected return from query for type");
result.next();
type_name = result.getString(1);
if (type_name.equals("int2"))
sql_type = Types.SMALLINT;
else if (type_name.equals("int4"))
sql_type = Types.INTEGER;
else if (type_name.equals("int8"))
sql_type = Types.BIGINT;
else if (type_name.equals("cash"))
sql_type = Types.DECIMAL;
else if (type_name.equals("money"))
sql_type = Types.DECIMAL;
else if (type_name.equals("float4"))
sql_type = Types.REAL;
else if (type_name.equals("float8"))
sql_type = Types.DOUBLE;
else if (type_name.equals("bpchar"))
sql_type = Types.CHAR;
else if (type_name.equals("varchar"))
sql_type = Types.VARCHAR;
else if (type_name.equals("bool"))
sql_type = Types.BIT;
else if (type_name.equals("date"))
sql_type = Types.DATE;
else if (type_name.equals("time"))
sql_type = Types.TIME;
else if (type_name.equals("abstime"))
sql_type = Types.TIMESTAMP;
else if (type_name.equals("timestamp"))
sql_type = Types.TIMESTAMP;
else
sql_type = Types.OTHER;
}
if(sql_type == -1) {
ResultSet result = (postgresql.ResultSet)conn.ExecSQL("select typname from pg_type where oid = " + oid);
if (result.getColumnCount() != 1 || result.getTupleCount() != 1)
throw new SQLException("Unexpected return from query for type");
result.next();
sql_type = getSQLType(result.getString(1));
result.close();
}
return sql_type;
}
/**
* This returns the SQL type. It is called by the Field and DatabaseMetaData classes
* @param type_name PostgreSQL type name
* @return java.sql.Types value for oid
*/
public static int getSQLType(String type_name)
{
int sql_type = Types.OTHER; // default value
for(int i=0;i<types.length;i++)
if(type_name.equals(types[i]))
sql_type=typei[i];
return sql_type;
}
/**
* This table holds the postgresql names for the types supported.
* Any types that map to Types.OTHER (eg POINT) don't go into this table.
* They default automatically to Types.OTHER
*
* Note: This must be in the same order as below.
*
* Tip: keep these grouped together by the Types. value
*/
private static final String types[] = {
"int2",
"int4","oid",
"int8",
"cash","money",
"float4",
"float8",
"bpchar","char","char2","char4","char8","char16",
"varchar","text","name","filename",
"bool",
"date",
"time",
"abstime","timestamp"
};
/**
* This table holds the JDBC type for each entry above.
*
* Note: This must be in the same order as above
*
* Tip: keep these grouped together by the Types. value
*/
private static final int typei[] = {
Types.SMALLINT,
Types.INTEGER,Types.INTEGER,
Types.BIGINT,
Types.DECIMAL,Types.DECIMAL,
Types.REAL,
Types.DOUBLE,
Types.CHAR,Types.CHAR,Types.CHAR,Types.CHAR,Types.CHAR,Types.CHAR,
Types.VARCHAR,Types.VARCHAR,Types.VARCHAR,Types.VARCHAR,
Types.BIT,
Types.DATE,
Types.TIME,
Types.TIMESTAMP,Types.TIMESTAMP
};
/**
* We also need to get the type name as returned by the back end.
* This is held in type_name AFTER a call to getSQLType. Since