fixed getImported/ExportedKeys to be simpler, and return the correct number of keys
This commit is contained in:
Dave Cramer
parent
40690c120c
commit
520695701c
@ -15,7 +15,7 @@ import org.postgresql.util.PSQLException;
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/*
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/*
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* This class provides information about the database as a whole.
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* This class provides information about the database as a whole.
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*
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*
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* $Id: DatabaseMetaData.java,v 1.52 2002/04/16 13:28:44 davec Exp $
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* $Id: DatabaseMetaData.java,v 1.53 2002/06/05 19:12:01 davec Exp $
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*
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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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* <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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* can use the normal ResultSet methods such as getString and getInt to
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@ -760,8 +760,10 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
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*/
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*/
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public boolean supportsANSI92EntryLevelSQL() throws SQLException
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public boolean supportsANSI92EntryLevelSQL() throws SQLException
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{
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{
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Driver.debug("supportsANSI92EntryLevelSQL false ");
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boolean schemas = connection.haveMinimumServerVersion("7.3");
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return false;
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Driver.debug("supportsANSI92EntryLevelSQL " + schemas);
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return schemas;
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}
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}
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/*
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/*
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@ -941,8 +943,10 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
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*/
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*/
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public boolean supportsSchemasInTableDefinitions() throws SQLException
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public boolean supportsSchemasInTableDefinitions() throws SQLException
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{
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{
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Driver.debug("supportsSchemasInTableDefinitions false");
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boolean schemas = connection.haveMinimumServerVersion("7.3");
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return false;
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Driver.debug("supportsSchemasInTableDefinitions " + schemas);
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return schemas;
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}
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}
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/*
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/*
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@ -2410,6 +2414,71 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
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" ORDER BY table_name, pk_name, key_seq"
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" ORDER BY table_name, pk_name, key_seq"
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);
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);
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}
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}
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/*
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SELECT
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c.relname as primary,
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c2.relname as foreign,
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t.tgconstrname,
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ic.relname as fkeyname,
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af.attnum as fkeyseq,
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ipc.relname as pkeyname,
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ap.attnum as pkeyseq,
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t.tgdeferrable,
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t.tginitdeferred,
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t.tgnargs,t.tgargs,
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p1.proname as updaterule,
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p2.proname as deleterule
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FROM
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pg_trigger t,
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pg_trigger t1,
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pg_class c,
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pg_class c2,
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pg_class ic,
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pg_class ipc,
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pg_proc p1,
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pg_proc p2,
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pg_index if,
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pg_index ip,
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pg_attribute af,
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pg_attribute ap
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WHERE
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(t.tgrelid=c.oid
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AND t.tgisconstraint
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AND t.tgconstrrelid=c2.oid
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AND t.tgfoid=p1.oid
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and p1.proname like '%%upd')
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and
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(t1.tgrelid=c.oid
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and t1.tgisconstraint
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and t1.tgconstrrelid=c2.oid
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AND t1.tgfoid=p2.oid
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and p2.proname like '%%del')
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AND c2.relname='users'
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AND
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(if.indrelid=c.oid
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AND if.indexrelid=ic.oid
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and ic.oid=af.attrelid
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AND if.indisprimary)
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and
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(ip.indrelid=c2.oid
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and ip.indexrelid=ipc.oid
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and ipc.oid=ap.attrelid
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and ip.indisprimary)
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*/
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/**
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*
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* @param catalog
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* @param schema
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* @param primaryTable if provided will get the keys exported by this table
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* @param foreignTable if provided will get the keys imported by this table
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* @return ResultSet
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* @throws SQLException
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*/
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private java.sql.ResultSet getImportedExportedKeys(String catalog, String schema, String primaryTable, String foreignTable) throws SQLException
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private java.sql.ResultSet getImportedExportedKeys(String catalog, String schema, String primaryTable, String foreignTable) throws SQLException
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{
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{
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@ -2430,120 +2499,203 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
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f[12] = new Field(connection, "PK_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[13] = new Field(connection, "DEFERRABILITY", iInt2Oid, 2);
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java.sql.ResultSet rs = connection.ExecSQL("SELECT c.relname,c2.relname,"
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java.sql.ResultSet rs = connection.ExecSQL(
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+ "t.tgconstrname,ic.relname,"
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"SELECT "
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+ "t.tgdeferrable,t.tginitdeferred,"
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+ "c.relname as prelname, "
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+ "t.tgnargs,t.tgargs,p.proname "
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+ "c2.relname as frelname, "
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+ "FROM pg_trigger t,pg_class c,pg_class c2,"
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+ "t.tgconstrname, "
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+ "pg_class ic,pg_proc p, pg_index i "
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+ "a.attnum as keyseq, "
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+ "WHERE t.tgrelid=c.oid AND t.tgconstrrelid=c2.oid "
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+ "ic.relname as fkeyname, "
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+ "AND t.tgfoid=p.oid AND tgisconstraint "
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+ "t.tgdeferrable, "
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+ ((primaryTable != null) ? "AND c.relname='" + primaryTable + "' " : "")
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+ "t.tginitdeferred, "
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+ ((foreignTable != null) ? "AND c2.relname='" + foreignTable + "' " : "")
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+ "t.tgnargs,t.tgargs, "
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+ "AND i.indrelid=c.oid "
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+ "p1.proname as updaterule, "
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+ "AND i.indexrelid=ic.oid AND i.indisprimary "
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+ "p2.proname as deleterule "
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+ "ORDER BY c.relname,c2.relname"
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+ "FROM "
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);
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+ "pg_trigger t, "
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+ "pg_trigger t1, "
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+ "pg_class c, "
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+ "pg_class c2, "
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+ "pg_class ic, "
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+ "pg_proc p1, "
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+ "pg_proc p2, "
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+ "pg_index i, "
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+ "pg_attribute a "
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+ "WHERE "
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// isolate the update rule
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+ "(t.tgrelid=c.oid "
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+ "AND t.tgisconstraint "
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+ "AND t.tgconstrrelid=c2.oid "
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+ "AND t.tgfoid=p1.oid "
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+ "and p1.proname like '%%upd') "
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+ "and "
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// isolate the delete rule
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+ "(t1.tgrelid=c.oid "
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+ "and t1.tgisconstraint "
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+ "and t1.tgconstrrelid=c2.oid "
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+ "AND t1.tgfoid=p2.oid "
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+ "and p2.proname like '%%del') "
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// if we are looking for exported keys then primary table will be used
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+ ((primaryTable != null) ? "AND c.relname='" + primaryTable + "' " : "")
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// if we are looking for imported keys then the foreign table will be used
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+ ((foreignTable != null) ? "AND c2.relname='" + foreignTable + "' " : "")
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+ "AND i.indrelid=c.oid "
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+ "AND i.indexrelid=ic.oid "
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+ "AND ic.oid=a.attrelid "
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+ "AND i.indisprimary "
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+ "ORDER BY "
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// orderby is as follows getExported, orders by FKTABLE,
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// getImported orders by PKTABLE
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// getCrossReference orders by FKTABLE, so this should work for both,
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// since when getting crossreference, primaryTable will be defined
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+ (primaryTable != null ? "frelname" : "prelname") + ",keyseq");
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// returns the following columns
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// and some example data with a table defined as follows
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// create table people ( id int primary key);
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// create table policy ( id int primary key);
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// create table users ( id int primary key, people_id int references people(id), policy_id int references policy(id))
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// prelname | frelname | tgconstrname | keyseq | fkeyName | tgdeferrable | tginitdeferred
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// 1 | 2 | 3 | 4 | 5 | 6 | 7
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// people | users | <unnamed> | 1 | people_pkey | f | f
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// | tgnargs | tgargs | updaterule | deleterule
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// | 8 | 9 | 10 | 11
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// | 6 | <unnamed>\000users\000people\000UNSPECIFIED\000people_id\000id\000 | RI_FKey_noaction_upd | RI_FKey_noaction_del
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Vector tuples = new Vector();
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Vector tuples = new Vector();
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short seq = 0;
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if (rs.next())
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while ( rs.next() )
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{
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{
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boolean hasMore;
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byte tuple[][] = new byte[14][];
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do
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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 fKeyName = rs.getString(3);
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tuple[2] = rs.getBytes(1); //PKTABLE_NAME
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boolean foundRule = false;
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tuple[6] = rs.getBytes(2); //FKTABLE_NAME
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do
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String fKeyName = rs.getString(3);
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{
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String updateRule = rs.getString(10);
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String proname = rs.getString(9);
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if (proname != null && proname.startsWith("RI_FKey_"))
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{
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int col = -1;
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if (proname.endsWith("_upd"))
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col = 9; // UPDATE_RULE
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else if (proname.endsWith("_del"))
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col = 10; // DELETE_RULE
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if (col > -1)
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{
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String rule = proname.substring(8, proname.length() - 4);
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int action = importedKeyNoAction;
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if ("cascade".equals(rule))
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action = importedKeyCascade;
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else if ("setnull".equals(rule))
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action = importedKeySetNull;
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else if ("setdefault".equals(rule))
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action = importedKeySetDefault;
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tuple[col] = Integer.toString(action).getBytes();
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if (!foundRule)
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if (updateRule != null )
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{
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{
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tuple[2] = rs.getBytes(1); //PKTABLE_NAME
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// Rules look like this RI_FKey_noaction_del so we want to pull out the part between the 'Key_' and the last '_' s
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tuple[6] = rs.getBytes(2); //FKTABLE_NAME
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// Parse the tgargs data
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String rule = updateRule.substring(8, updateRule.length() - 4);
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StringBuffer fkeyColumns = new StringBuffer();
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StringBuffer pkeyColumns = new StringBuffer();
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int numColumns = (rs.getInt(7) >> 1) - 2;
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String s = rs.getString(8);
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int pos = s.lastIndexOf("\\000");
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for (int c = 0;c < numColumns;c++)
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{
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if (pos > -1)
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{
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int pos2 = s.lastIndexOf("\\000", pos - 1);
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if (pos2 > -1)
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{
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if (pkeyColumns.length() > 0)
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pkeyColumns.insert(0, ',');
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pkeyColumns.insert(0, s.substring(pos2 + 4, pos)); //PKCOLUMN_NAME
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pos = s.lastIndexOf("\\000", pos2 - 1);
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if (pos > -1)
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{
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if (fkeyColumns.length() > 0)
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fkeyColumns.insert(0, ',');
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fkeyColumns.insert(0, s.substring(pos + 4, pos2)); //FKCOLUMN_NAME
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}
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}
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}
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}
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tuple[3] = pkeyColumns.toString().getBytes(); //PKCOLUMN_NAME
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tuple[7] = fkeyColumns.toString().getBytes(); //FKCOLUMN_NAME
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tuple[8] = Integer.toString(seq++).getBytes(); //KEY_SEQ
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int action = importedKeyNoAction;
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tuple[11] = fKeyName.getBytes(); //FK_NAME
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tuple[12] = rs.getBytes(4); //PK_NAME
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// DEFERRABILITY
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if ( rule == null || "noaction".equals(rule) )
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int deferrability = importedKeyNotDeferrable;
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action = importedKeyNoAction;
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boolean deferrable = rs.getBoolean(5);
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if ("cascade".equals(rule))
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boolean initiallyDeferred = rs.getBoolean(6);
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action = importedKeyCascade;
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if (deferrable)
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else if ("setnull".equals(rule))
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{
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action = importedKeySetNull;
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if (initiallyDeferred)
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else if ("setdefault".equals(rule))
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deferrability = importedKeyInitiallyDeferred;
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action = importedKeySetDefault;
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else
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else if ("restrict".equals(rule))
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deferrability = importedKeyInitiallyImmediate;
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action = importedKeyRestrict;
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}
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tuple[13] = Integer.toString(deferrability).getBytes();
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foundRule = true;
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tuple[9] = Integer.toString(action).getBytes();
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}
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}
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}
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}
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while ((hasMore = rs.next()) && fKeyName.equals(rs.getString(3)));
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if(foundRule) tuples.addElement(tuple);
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}
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}
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String deleteRule = rs.getString(11);
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while (hasMore);
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}
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return new ResultSet(connection, f, tuples, "OK", 1);
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if ( deleteRule != null )
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{
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String rule = updateRule.substring(8, updateRule.length() - 4);
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int action = importedKeyNoAction;
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if ("cascade".equals(rule))
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action = importedKeyCascade;
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else if ("setnull".equals(rule))
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action = importedKeySetNull;
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else if ("setdefault".equals(rule))
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action = importedKeySetDefault;
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tuple[10] = Integer.toString(action).getBytes();
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}
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// Parse the tgargs data
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StringBuffer fkeyColumns = new StringBuffer();
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StringBuffer pkeyColumns = new StringBuffer();
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// Note, I am guessing at most of this, but it should be close
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// if not, please correct
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// the keys are in pairs and start after the first four arguments
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// the arguments are seperated by \000
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int numColumns = (rs.getInt(8) >> 1) - 2;
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// get the args
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String targs = rs.getString(9);
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// start parsing from the end
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int pos = targs.lastIndexOf("\\000");
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for (int c = 0;c < numColumns;c++)
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{
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// this should never be, since we should never get to the beginning of the string
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// as the number of columns should override this, but it is a safe test
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if (pos > -1)
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{
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int pos2 = targs.lastIndexOf("\\000", pos - 1);
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if (pos2 > -1)
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{
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// seperate the pkColumns by ',' s
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if (pkeyColumns.length() > 0)
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pkeyColumns.insert(0, ',');
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// extract the column name out 4 characters ahead essentially removing the /000
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pkeyColumns.insert(0, targs.substring(pos2 + 4, pos)); //PKCOLUMN_NAME
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// now find the associated fkColumn
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pos = targs.lastIndexOf("\\000", pos2 - 1);
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if (pos > -1)
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{
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if (fkeyColumns.length() > 0)
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fkeyColumns.insert(0, ',');
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fkeyColumns.insert(0, targs.substring(pos + 4, pos2)); //FKCOLUMN_NAME
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}
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}
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}
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}
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tuple[3] = pkeyColumns.toString().getBytes(); //PKCOLUMN_NAME
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||||||
|
tuple[7] = fkeyColumns.toString().getBytes(); //FKCOLUMN_NAME
|
||||||
|
|
||||||
|
tuple[8] = rs.getBytes(4); //KEY_SEQ
|
||||||
|
tuple[11] = rs.getBytes(5); //FK_NAME
|
||||||
|
tuple[12] = rs.getBytes(3); //PK_NAME
|
||||||
|
|
||||||
|
// DEFERRABILITY
|
||||||
|
int deferrability = importedKeyNotDeferrable;
|
||||||
|
boolean deferrable = rs.getBoolean(6);
|
||||||
|
boolean initiallyDeferred = rs.getBoolean(7);
|
||||||
|
if (deferrable)
|
||||||
|
{
|
||||||
|
if (initiallyDeferred)
|
||||||
|
deferrability = importedKeyInitiallyDeferred;
|
||||||
|
else
|
||||||
|
deferrability = importedKeyInitiallyImmediate;
|
||||||
|
}
|
||||||
|
tuple[13] = Integer.toString(deferrability).getBytes();
|
||||||
|
|
||||||
|
tuples.addElement(tuple);
|
||||||
|
}
|
||||||
|
|
||||||
|
return new ResultSet(connection, f, tuples, "OK", 1);
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
|
|||||||
@ -9,7 +9,7 @@ import java.sql.*;
|
|||||||
*
|
*
|
||||||
* PS: Do you know how difficult it is to type on a train? ;-)
|
* PS: Do you know how difficult it is to type on a train? ;-)
|
||||||
*
|
*
|
||||||
* $Id: DatabaseMetaDataTest.java,v 1.7 2002/05/30 16:39:26 davec Exp $
|
* $Id: DatabaseMetaDataTest.java,v 1.8 2002/06/05 19:12:01 davec Exp $
|
||||||
*/
|
*/
|
||||||
|
|
||||||
public class DatabaseMetaDataTest extends TestCase
|
public class DatabaseMetaDataTest extends TestCase
|
||||||
@ -235,6 +235,7 @@ public class DatabaseMetaDataTest extends TestCase
|
|||||||
Connection con1 = JDBC2Tests.openDB();
|
Connection con1 = JDBC2Tests.openDB();
|
||||||
JDBC2Tests.createTable( con1, "people", "id int4 primary key, name text" );
|
JDBC2Tests.createTable( con1, "people", "id int4 primary key, name text" );
|
||||||
JDBC2Tests.createTable( con1, "policy", "id int4 primary key, name text" );
|
JDBC2Tests.createTable( con1, "policy", "id int4 primary key, name text" );
|
||||||
|
|
||||||
JDBC2Tests.createTable( con1, "users", "id int4 primary key, people_id int4, policy_id int4,"+
|
JDBC2Tests.createTable( con1, "users", "id int4 primary key, people_id int4, policy_id int4,"+
|
||||||
"CONSTRAINT people FOREIGN KEY (people_id) references people(id),"+
|
"CONSTRAINT people FOREIGN KEY (people_id) references people(id),"+
|
||||||
"constraint policy FOREIGN KEY (policy_id) references policy(id)" );
|
"constraint policy FOREIGN KEY (policy_id) references policy(id)" );
|
||||||
@ -261,9 +262,10 @@ public class DatabaseMetaDataTest extends TestCase
|
|||||||
assertTrue( fkColumnName.equals( "people_id" ) || fkColumnName.equals( "policy_id" ) ) ;
|
assertTrue( fkColumnName.equals( "people_id" ) || fkColumnName.equals( "policy_id" ) ) ;
|
||||||
|
|
||||||
String fkName = rs.getString( "FK_NAME" );
|
String fkName = rs.getString( "FK_NAME" );
|
||||||
assertTrue( fkName.equals( "people") || fkName.equals( "policy" ) );
|
assertTrue( fkName.equals( "people_pkey") || fkName.equals( "policy_pkey" ) );
|
||||||
|
|
||||||
String pkName = rs.getString( "PK_NAME" );
|
String pkName = rs.getString( "PK_NAME" );
|
||||||
|
// assertTrue( pkName.equals("users") );
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -280,7 +282,7 @@ public class DatabaseMetaDataTest extends TestCase
|
|||||||
assertTrue( rs.getString( "FKTABLE_NAME" ).equals( "users" ) );
|
assertTrue( rs.getString( "FKTABLE_NAME" ).equals( "users" ) );
|
||||||
assertTrue( rs.getString( "FKCOLUMN_NAME" ).equals( "people_id" ) );
|
assertTrue( rs.getString( "FKCOLUMN_NAME" ).equals( "people_id" ) );
|
||||||
|
|
||||||
assertTrue( rs.getString( "FK_NAME" ).equals( "people" ) );
|
assertTrue( rs.getString( "FK_NAME" ).equals( "people_pkey" ) );
|
||||||
|
|
||||||
|
|
||||||
JDBC2Tests.dropTable( con1, "users" );
|
JDBC2Tests.dropTable( con1, "users" );
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user