PATCH to org/postgresql/jdbc2/DatabaseMetaData.java

---
postgresql-7.1beta4/src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java
Mon Jan 29 03:53:56 2001
+++
postgresql-7.1beta4-new/src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java
Sat Feb 17 10:22:38 2001
@@ -1048,7 +1048,7 @@
/**
* Can statements remain open across commits? They may, but
* this driver cannot guarentee that. In further reflection.
- * we are talking a Statement object jere, so the answer is
+ * we are talking a Statement object here, so the answer is
* yes, since the Statement is only a vehicle to ExecSQL()
*
* @return true if they always remain open; false otherwise
@@ -2185,6 +2185,81 @@
);
}

+ private Vector importLoop(java.sql.ResultSet keyRelation) throws
SQLException {
+ String s,s2;
+ String origTable=null, primTable=new String(""), schema;
+ int i;
+ Vector v;
+
+ s=keyRelation.getString(1);
+ s2=s;
+ System.out.println(s);
+ v=new Vector();
+ for (i=0;;i++) {
+ s=s.substring(s.indexOf("\\000")+4);
+ if (s.compareTo("")==0) {
+ System.out.println();
+ break;
+ }
+ s2=s.substring(0,s.indexOf("\\000"));
+ switch (i) {
+ case 0:
+ origTable=s2;
+ break;
+ case 1:
+ primTable=s2;
+ break;
+ case 2:
+ schema=s2;
+ break;
+ default:
+ v.add(s2);
+ }
+ }
+
+ java.sql.ResultSet rstmp=connection.ExecSQL("select * from
"+origTable+" where 1=0");
+ java.sql.ResultSetMetaData origCols=rstmp.getMetaData();
+
+ String stmp;
+ Vector tuples=new Vector();
+ byte tuple[][];
+
+ // the foreign keys are only on even positions in the Vector.
+ for (i=0;i<v.size();i+=2) {
+ stmp=(String)v.elementAt(i);
+
+ for (int j=1;j<=origCols.getColumnCount();j++) {
+ if (stmp.compareTo(origCols.getColumnName(j))==0) {
+ tuple=new byte[14][0];
+
+ for (int k=0;k<14;k++)
+ tuple[k]=null;
+
+ //PKTABLE_NAME
+ tuple[2]=primTable.getBytes();
+ //PKTABLE_COLUMN
+ stmp=(String)v.elementAt(i+1);
+ tuple[3]=stmp.getBytes();
+ //FKTABLE_NAME
+ tuple[6]=origTable.getBytes();
+ //FKCOLUMN_NAME
+ tuple[7]=origCols.getColumnName(j).getBytes();
+ //KEY_SEQ
+ tuple[8]=Integer.toString(j).getBytes();
+
+ tuples.add(tuple);
+
+ System.out.println(origCols.getColumnName(j)+
+ ": "+j+" -> "+primTable+": "+
+ (String)v.elementAt(i+1));
+ break;
+ }
+ }
+ }
+
+ return tuples;
+ }
+
/**
* Get a description of the primary key columns that are
* referenced by a table's foreign key columns (the primary keys
@@ -2238,8 +2313,39 @@
*/
public java.sql.ResultSet getImportedKeys(String catalog, String
schema, String table) throws SQLException
{
- // XXX-Not Implemented
- return null;
+ // Added by Ola Sundell <ola(at)miranda(dot)org>
+ // FIXME: error checking galore!
+ java.sql.ResultSet rsret;
+ Field f[]=new Field[14];
+ byte tuple[][];
+
+ f[0]=new Field(connection, "PKTABLE_CAT", iVarcharOid, 32);
+ f[1]=new Field(connection, "PKTABLE_SCHEM", iVarcharOid, 32);
+ f[2]=new Field(connection, "PKTABLE_NAME", iVarcharOid, 32);
+ f[3]=new Field(connection, "PKCOLUMN_NAME", iVarcharOid, 32);
+ f[4]=new Field(connection, "FKTABLE_CAT", iVarcharOid, 32);
+ f[5]=new Field(connection, "FKTABLE_SCHEM", iVarcharOid, 32);
+ f[6]=new Field(connection, "FKTABLE_NAME", iVarcharOid, 32);
+ f[7]=new Field(connection, "FKCOLUMN_NAME", iVarcharOid, 32);
+ f[8]=new Field(connection, "KEY_SEQ", iInt2Oid, 2);
+ f[9]=new Field(connection, "UPDATE_RULE", iInt2Oid, 2);
+ f[10]=new Field(connection, "DELETE_RULE", iInt2Oid, 2);
+ f[11]=new Field(connection, "FK_NAME", iVarcharOid, 32);
+ f[12]=new Field(connection, "PK_NAME", iVarcharOid, 32);
+ f[13]=new Field(connection, "DEFERRABILITY", iInt2Oid, 2);
+
+ java.sql.ResultSet rs=connection.ExecSQL("select t.tgargs "+
+ "from pg_class as c, pg_trigger as t "+
+ "where c.relname like '"+table+"' and
c.relfilenode=t.tgrelid");
+ Vector tuples=new Vector();
+
+ while (rs.next()) {
+ tuples.addAll(importLoop(rs));
+ }
+
+ rsret=new ResultSet(connection, f, tuples, "OK", 1);
+
+ return rsret;
}

/**