mirror of https://github.com/postgres/postgres
proper select for Jason Davies patch to getImportedKeys
fixes for compiling Jason's getImportedKeys, getExportedKeys
This commit is contained in:
Dave Cramer
parent
04550d3c90
commit
0b1289e67d
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@ -13,7 +13,7 @@ import org.postgresql.util.PSQLException;
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/**
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* This class provides information about the database as a whole.
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*
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* $Id: DatabaseMetaData.java,v 1.36 2001/10/30 05:05:25 barry Exp $
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* $Id: DatabaseMetaData.java,v 1.37 2001/11/02 23:50:08 davec Exp $
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*
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* <p>Many of the methods here return lists of information in ResultSets. You
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* can use the normal ResultSet methods such as getString and getInt to
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@ -2272,86 +2272,72 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
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);
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}
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private void importLoop(Vector tuples, java.sql.ResultSet keyRelation) throws SQLException
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{
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String s, s2;
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String origTable = null, primTable = new String(""), schema;
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int i;
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Vector v = new Vector();
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s = keyRelation.getString(1);
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s2 = s;
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//System.out.println(s);
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for (i = 0;;i++)
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private void parseConstraint(java.sql.ResultSet keyRelation, Vector tuples) throws SQLException
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{
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byte tuple[][]=new byte[14][0];
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for (int k = 0;k < 14;k++)
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tuple[k] = null;
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String s=keyRelation.getString(1);
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int pos=s.indexOf("\\000");
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if(pos>-1)
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{
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tuple[11]=s.substring(0,pos).getBytes();; // FK_NAME
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int pos2=s.indexOf("\\000", pos+1);
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if(pos2>-1)
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{
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s = s.substring(s.indexOf("\\000") + 4);
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if (s.compareTo("") == 0)
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tuple[2]=s.substring(pos+4, pos2).getBytes();; // PKTABLE_NAME
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pos=s.indexOf("\\000", pos2+1);
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if(pos>-1)
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{
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tuple[6]=s.substring(pos2+4, pos).getBytes();; // FKTABLE_NAME
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pos=s.indexOf("\\000", pos+1); // Ignore MATCH type
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if(pos>-1)
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{
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//System.out.println();
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break;
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}
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s2 = s.substring(0, s.indexOf("\\000"));
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switch (i)
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{
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case 0:
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origTable = s2;
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break;
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case 1:
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primTable = s2;
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break;
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case 2:
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schema = s2;
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break;
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default:
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v.addElement(s2);
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}
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}
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java.sql.ResultSet rstmp = connection.ExecSQL("select * from " + origTable + " where 1=0");
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java.sql.ResultSetMetaData origCols = rstmp.getMetaData();
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String stmp;
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// Vector tuples=new Vector();
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byte tuple[][];
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// the foreign keys are only on even positions in the Vector.
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for (i = 0;i < v.size();i += 2)
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{
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stmp = (String)v.elementAt(i);
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for (int j = 1;j <= origCols.getColumnCount();j++)
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{
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if (stmp.compareTo(origCols.getColumnName(j)) == 0)
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pos2=s.indexOf("\\000",pos+1);
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if(pos2>-1)
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{
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tuple[3]=s.substring(pos+4, pos2).getBytes();; // PKCOLUMN_NAME
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pos=s.indexOf("\\000", pos2+1);
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if(pos>-1)
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{
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tuple = new byte[14][0];
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for (int k = 0;k < 14;k++)
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tuple[k] = null;
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//PKTABLE_NAME
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tuple[2] = primTable.getBytes();
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//PKTABLE_COLUMN
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stmp = (String)v.elementAt(i + 1);
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tuple[3] = stmp.getBytes();
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//FKTABLE_NAME
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tuple[6] = origTable.getBytes();
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//FKCOLUMN_NAME
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tuple[7] = origCols.getColumnName(j).getBytes();
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//KEY_SEQ
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tuple[8] = Integer.toString(j).getBytes();
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tuples.addElement(tuple);
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//System.out.println(origCols.getColumnName(j)+
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//": "+j+" -> "+primTable+": "+
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//(String)v.elementAt(i+1));
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break;
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tuple[7]=s.substring(pos2+4, pos).getBytes(); //FKCOLUMN_NAME
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}
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}
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}
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}
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}
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}
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//return tuples;
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// UPDATE_RULE
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String rule=keyRelation.getString(2);
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int action=importedKeyNoAction;
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if("cascade".equals(rule)) action=importedKeyCascade;
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else if("setnull".equals(rule)) action=importedKeySetNull;
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else if("setdefault".equals(rule)) action=importedKeySetDefault;
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tuple[9]=Integer.toString(action).getBytes();
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// DELETE_RULE
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rule=keyRelation.getString(3);
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action=importedKeyNoAction;
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if("cascade".equals(rule)) action=importedKeyCascade;
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else if("setnull".equals(rule)) action=importedKeySetNull;
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else if("setdefault".equals(rule)) action=importedKeySetDefault;
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tuple[10]=Integer.toString(action).getBytes();
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// DEFERRABILITY
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int deferrability=importedKeyNotDeferrable;
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boolean deferrable=keyRelation.getBoolean(4);
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if(deferrable)
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{
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if(keyRelation.getBoolean(5))
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deferrability=importedKeyInitiallyDeferred;
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else
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deferrability=importedKeyInitiallyImmediate;
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}
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tuple[13]=Integer.toString(deferrability).getBytes();
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for (int i=0; i< 14; i++){
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tuples.addElement(tuple[i]);
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}
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}
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/**
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@ -2405,43 +2391,54 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
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* @return ResultSet each row is a primary key column description
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* @see #getExportedKeys
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*/
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public java.sql.ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException
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{
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// Added by Ola Sundell <ola@miranda.org>
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// FIXME: error checking galore!
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java.sql.ResultSet rsret;
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Field f[] = new Field[14];
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byte tuple[][];
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public java.sql.ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException
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{
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Field f[]=new Field[14];
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f[0] = new Field(connection, "PKTABLE_CAT", iVarcharOid, 32);
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f[1] = new Field(connection, "PKTABLE_SCHEM", iVarcharOid, 32);
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f[2] = new Field(connection, "PKTABLE_NAME", iVarcharOid, 32);
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f[3] = new Field(connection, "PKCOLUMN_NAME", iVarcharOid, 32);
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f[4] = new Field(connection, "FKTABLE_CAT", iVarcharOid, 32);
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f[5] = new Field(connection, "FKTABLE_SCHEM", iVarcharOid, 32);
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f[6] = new Field(connection, "FKTABLE_NAME", iVarcharOid, 32);
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f[7] = new Field(connection, "FKCOLUMN_NAME", iVarcharOid, 32);
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f[8] = new Field(connection, "KEY_SEQ", iInt2Oid, 2);
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f[9] = new Field(connection, "UPDATE_RULE", iInt2Oid, 2);
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f[10] = new Field(connection, "DELETE_RULE", iInt2Oid, 2);
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f[11] = new Field(connection, "FK_NAME", iVarcharOid, 32);
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f[12] = new Field(connection, "PK_NAME", iVarcharOid, 32);
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f[13] = new Field(connection, "DEFERRABILITY", iInt2Oid, 2);
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f[0]=new Field(connection, "PKTABLE_CAT", iVarcharOid, 32);
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f[1]=new Field(connection, "PKTABLE_SCHEM", iVarcharOid, 32);
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f[2]=new Field(connection, "PKTABLE_NAME", iVarcharOid, 32);
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f[3]=new Field(connection, "PKCOLUMN_NAME", iVarcharOid, 32);
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f[4]=new Field(connection, "FKTABLE_CAT", iVarcharOid, 32);
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f[5]=new Field(connection, "FKTABLE_SCHEM", iVarcharOid, 32);
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f[6]=new Field(connection, "FKTABLE_NAME", iVarcharOid, 32);
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f[7]=new Field(connection, "FKCOLUMN_NAME", iVarcharOid, 32);
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f[8]=new Field(connection, "KEY_SEQ", iInt2Oid, 2);
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f[9]=new Field(connection, "UPDATE_RULE", iInt2Oid, 2);
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f[10]=new Field(connection, "DELETE_RULE", iInt2Oid, 2);
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f[11]=new Field(connection, "FK_NAME", iVarcharOid, 32);
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f[12]=new Field(connection, "PK_NAME", iVarcharOid, 32);
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f[13]=new Field(connection, "DEFERRABILITY", iInt2Oid, 2);
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java.sql.ResultSet rs = connection.ExecSQL("select t.tgargs " +
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"from pg_class as c, pg_trigger as t " +
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"where c.relname like '" + table + "' and c.relfilenode=t.tgrelid");
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Vector tuples = new Vector();
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java.sql.ResultSet rs = connection.ExecSQL("SELECT a.tgargs,"
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+ "substring(a.proname from 9 for (char_length(a.proname)-12)),"
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+ "substring(b.proname from 9 for (char_length(b.proname)-12)),"
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+ "a.tgdeferrable,"
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+ "a.tginitdeferred "
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+ "FROM "
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+ "(SELECT t.tgargs, t.tgconstrname, p.proname, t.tgdeferrable,"
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+ "t.tginitdeferred "
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+ "FROM pg_class as c, pg_proc as p, pg_trigger as t "
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+ "WHERE c.relfilenode=t.tgrelid AND t.tgfoid = p.oid "
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+ "AND p.proname LIKE 'RI_FKey_%_upd') as a,"
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+ "(SELECT t.tgconstrname, p.proname "
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+ "FROM pg_class as c, pg_proc as p, pg_trigger as t "
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+ "WHERE c.relfilenode=t.tgrelid AND t.tgfoid = p.oid "
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+ "AND p.proname LIKE 'RI_FKey_%_del') as b,"
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+ "(SELECT t.tgconstrname FROM pg_class as c, pg_trigger as t "
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+ "WHERE c.relname like '"+table+"' AND c.relfilenode=t.tgrelid) as c "
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+ "WHERE a.tgconstrname=b.tgconstrname AND a.tgconstrname=c.tgconstrname"
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);
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Vector tuples = new Vector();
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while (rs.next())
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{
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importLoop(tuples, rs);
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}
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while (rs.next())
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{
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parseConstraint(rs,tuples);
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}
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rsret = new ResultSet(connection, f, tuples, "OK", 1);
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return rsret;
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}
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return new ResultSet(connection, f, tuples, "OK", 1);
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}
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/**
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* Get a description of a foreign key columns that reference a
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@ -2498,7 +2495,47 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
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*/
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public java.sql.ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException
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{
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throw org.postgresql.Driver.notImplemented();
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Field f[] = new Field[14];
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f[0] = new Field(connection, "PKTABLE_CAT", iVarcharOid, 32);
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f[1] = new Field(connection, "PKTABLE_SCHEM", iVarcharOid, 32);
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f[2] = new Field(connection, "PKTABLE_NAME", iVarcharOid, 32);
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f[3] = new Field(connection, "PKCOLUMN_NAME", iVarcharOid, 32);
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f[4] = new Field(connection, "FKTABLE_CAT", iVarcharOid, 32);
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f[5] = new Field(connection, "FKTABLE_SCHEM", iVarcharOid, 32);
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f[6] = new Field(connection, "FKTABLE_NAME", iVarcharOid, 32);
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f[7] = new Field(connection, "FKCOLUMN_NAME", iVarcharOid, 32);
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f[8] = new Field(connection, "KEY_SEQ", iInt2Oid, 2);
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f[9] = new Field(connection, "UPDATE_RULE", iInt2Oid, 2);
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f[10] = new Field(connection, "DELETE_RULE", iInt2Oid, 2);
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f[11] = new Field(connection, "FK_NAME", iVarcharOid, 32);
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f[12] = new Field(connection, "PK_NAME", iVarcharOid, 32);
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f[13] = new Field(connection, "DEFERRABILITY", iInt2Oid, 2);
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java.sql.ResultSet rs = connection.ExecSQL("SELECT a.tgargs,"
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+ "substring(a.proname from 9 for (char_length(a.proname)-12)),"
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+ "substring(b.proname from 9 for (char_length(b.proname)-12)),"
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+ "a.tgdeferrable,"
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+ "a.tginitdeferred "
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+ "FROM "
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+ "(SELECT t.tgargs, t.tgconstrname, p.proname,"
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+ "t.tgdeferrable, t.tginitdeferred "
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+ "FROM pg_class as c, pg_proc as p, pg_trigger as t "
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+ "WHERE c.relname like '"+table+"' AND c.relfilenode=t.tgrelid "
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+ "AND t.tgfoid = p.oid AND p.proname LIKE 'RI_FKey_%_upd') as a, "
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+ "(SELECT t.tgconstrname, p.proname "
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+ "FROM pg_class as c, pg_proc as p, pg_trigger as t "
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+ "WHERE c.relname like '"+table+"' AND c.relfilenode=t.tgrelid "
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+ "AND t.tgfoid = p.oid AND p.proname LIKE 'RI_FKey_%_del') as b "
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+ "WHERE a.tgconstrname=b.tgconstrname");
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Vector tuples = new Vector();
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while (rs.next())
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{
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parseConstraint(rs,tuples);
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}
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return new ResultSet(connection, f, tuples, "OK", 1);
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}
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/**
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