Examples with NucleusException org.datanucleus.exceptions.NucleusException used on opensource projects

Example 31 with NucleusException

use of org.datanucleus.exceptions.NucleusException in project datanucleus-rdbms by datanucleus.

the class MapContainsKeyMethod method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    if (args == null || args.size() == 0 || args.size() > 1) {
        throw new NucleusException(Localiser.msg("060016", "containsKey", "MapExpression", 1));
    }
    MapExpression mapExpr = (MapExpression) expr;
    SQLExpression keyExpr = args.get(0);
    if (keyExpr.isParameter()) {
        // Key is a parameter so make sure its type is set
        AbstractMemberMetaData mmd = mapExpr.getJavaTypeMapping().getMemberMetaData();
        if (mmd != null && mmd.getMap() != null) {
            Class keyCls = stmt.getQueryGenerator().getClassLoaderResolver().classForName(mmd.getMap().getKeyType());
            stmt.getQueryGenerator().bindParameter(keyExpr.getParameterName(), keyCls);
        }
    }
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    ClassLoaderResolver clr = stmt.getQueryGenerator().getClassLoaderResolver();
    if (expr instanceof MapLiteral) {
        // Literal Map
        MapLiteral lit = (MapLiteral) expr;
        Map map = (Map) lit.getValue();
        JavaTypeMapping m = exprFactory.getMappingForType(boolean.class, true);
        if (map == null || map.size() == 0) {
            return exprFactory.newLiteral(stmt, m, true).eq(exprFactory.newLiteral(stmt, m, false));
        }
        boolean useInExpression = false;
        List<SQLExpression> mapKeyExprs = lit.getKeyLiteral().getKeyExpressions();
        if (mapKeyExprs != null && !mapKeyExprs.isEmpty()) {
            // Make sure the the map key(s) are compatible with the keyExpr
            boolean incompatible = true;
            Class elemtype = clr.classForName(keyExpr.getJavaTypeMapping().getType());
            Iterator<SQLExpression> mapKeyExprIter = mapKeyExprs.iterator();
            while (mapKeyExprIter.hasNext()) {
                SQLExpression mapKeyExpr = mapKeyExprIter.next();
                Class mapKeyType = clr.classForName(mapKeyExpr.getJavaTypeMapping().getType());
                if (keyTypeCompatible(elemtype, mapKeyType)) {
                    incompatible = false;
                    break;
                }
            }
            if (incompatible) {
                // The provided element type isn't assignable to any of the input collection elements!
                return exprFactory.newLiteral(stmt, m, true).eq(exprFactory.newLiteral(stmt, m, false));
            }
            // Check if we should compare using an "IN (...)" expression
            SQLExpression mapKeyExpr = mapKeyExprs.get(0);
            if (mapKeyExpr instanceof StringExpression || mapKeyExpr instanceof NumericExpression || mapKeyExpr instanceof TemporalExpression || mapKeyExpr instanceof CharacterExpression || mapKeyExpr instanceof EnumExpression) {
                useInExpression = true;
            }
        }
        if (useInExpression) {
            // Return "key IN (val1, val2, ...)"
            SQLExpression[] exprs = (mapKeyExprs != null ? mapKeyExprs.toArray(new SQLExpression[mapKeyExprs.size()]) : null);
            return new InExpression(keyExpr, exprs);
        }
        // TODO If keyExpr is a parameter and mapExpr is derived from a parameter ?
        MapKeyLiteral mapKeyLiteral = lit.getKeyLiteral();
        BooleanExpression bExpr = null;
        List<SQLExpression> elementExprs = mapKeyLiteral.getKeyExpressions();
        for (int i = 0; i < elementExprs.size(); i++) {
            if (bExpr == null) {
                bExpr = (elementExprs.get(i)).eq(keyExpr);
            } else {
                bExpr = bExpr.ior((elementExprs.get(i)).eq(keyExpr));
            }
        }
        if (bExpr != null) {
            bExpr.encloseInParentheses();
        }
        return bExpr;
    }
    if (stmt.getQueryGenerator().getCompilationComponent() == CompilationComponent.FILTER) {
        boolean useSubquery = getNeedsSubquery(stmt);
        JoinType joinType = JoinType.INNER_JOIN;
        if (keyExpr instanceof UnboundExpression) {
            // See if the user has defined what should be used
            String varName = ((UnboundExpression) keyExpr).getVariableName();
            String extensionName = "datanucleus.query.jdoql." + varName + ".join";
            String extensionValue = (String) stmt.getQueryGenerator().getValueForExtension(extensionName);
            if (extensionValue != null) {
                if (extensionValue.equalsIgnoreCase("SUBQUERY")) {
                    useSubquery = true;
                } else if (extensionValue.equalsIgnoreCase("INNERJOIN")) {
                    useSubquery = false;
                } else if (extensionValue.equalsIgnoreCase("LEFTOUTERJOIN")) {
                    joinType = JoinType.LEFT_OUTER_JOIN;
                }
            }
        }
        // TODO Check if *this* "containsKey" is negated, not any of them (and remove above check)
        if (useSubquery) {
            return containsAsSubquery(stmt, mapExpr, keyExpr);
        }
        return containsAsJoin(stmt, mapExpr, keyExpr, joinType);
    }
    return containsAsSubquery(stmt, mapExpr, keyExpr);
}

Example 32 with NucleusException

use of org.datanucleus.exceptions.NucleusException in project datanucleus-rdbms by datanucleus.

the class MapGetMethod method getAsInnerJoin.

/**
 * Implementation of Map.get() using an inner join to the table representing the map, adding a condition on the key and returning the value.
 * @param stmt SQLStatement
 * @param mapExpr The map expression
 * @param keyValExpr The key value expression
 * @return The value expression
 */
protected SQLExpression getAsInnerJoin(SQLStatement stmt, MapExpression mapExpr, SQLExpression keyValExpr) {
    ClassLoaderResolver clr = stmt.getQueryGenerator().getClassLoaderResolver();
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    JavaTypeMapping m = mapExpr.getJavaTypeMapping();
    AbstractMemberMetaData mmd = m.getMemberMetaData();
    if (mmd != null) {
        MapMetaData mapmd = mmd.getMap();
        if (mapmd.getMapType() == MapType.MAP_TYPE_JOIN) {
            MapTable joinTbl = (MapTable) stmt.getRDBMSManager().getTable(mmd);
            // Add join to join table
            SQLTable joinSqlTbl = stmt.join(JoinType.INNER_JOIN, mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(), joinTbl, null, joinTbl.getOwnerMapping(), null, null);
            // Add condition on key
            SQLExpression keyExpr = exprFactory.newExpression(stmt, joinSqlTbl, joinTbl.getKeyMapping());
            stmt.whereAnd(keyExpr.eq(keyValExpr), true);
            // Return value expression
            if (mapmd.getValueClassMetaData(clr) != null) {
                // Persistable value so join to its table
                DatastoreClass valTable = stmt.getRDBMSManager().getDatastoreClass(mapmd.getValueType(), clr);
                SQLTable valueSqlTbl = stmt.join(JoinType.INNER_JOIN, joinSqlTbl, joinTbl.getValueMapping(), valTable, null, valTable.getIdMapping(), null, null);
                return exprFactory.newExpression(stmt, valueSqlTbl, valTable.getIdMapping());
            }
            // Return mapping for the value in the join table
            SQLExpression valueExpr = exprFactory.newExpression(stmt, joinSqlTbl, joinTbl.getValueMapping());
            return valueExpr;
        } else if (mapmd.getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE) {
            // Key stored in value table, so join to value table
            DatastoreClass valTable = stmt.getRDBMSManager().getDatastoreClass(mapmd.getValueType(), clr);
            AbstractClassMetaData valCmd = mapmd.getValueClassMetaData(clr);
            JavaTypeMapping mapTblOwnerMapping;
            if (mmd.getMappedBy() != null) {
                mapTblOwnerMapping = valTable.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
            } else {
                mapTblOwnerMapping = valTable.getExternalMapping(mmd, MappingType.EXTERNAL_FK);
            }
            SQLTable valSqlTbl = stmt.join(JoinType.INNER_JOIN, mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(), valTable, null, mapTblOwnerMapping, null, null);
            // Add condition on key
            JavaTypeMapping keyMapping = valTable.getMemberMapping(valCmd.getMetaDataForMember(mmd.getKeyMetaData().getMappedBy()));
            SQLExpression keyExpr = exprFactory.newExpression(stmt, valSqlTbl, keyMapping);
            stmt.whereAnd(keyExpr.eq(keyValExpr), true);
            // Return value expression
            SQLExpression valueExpr = exprFactory.newExpression(stmt, valSqlTbl, valTable.getIdMapping());
            return valueExpr;
        } else if (mapmd.getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY) {
            // Value stored in key table, so join to key table
            DatastoreClass keyTable = stmt.getRDBMSManager().getDatastoreClass(mapmd.getKeyType(), clr);
            AbstractClassMetaData keyCmd = mapmd.getKeyClassMetaData(clr);
            JavaTypeMapping mapTblOwnerMapping;
            if (mmd.getMappedBy() != null) {
                mapTblOwnerMapping = keyTable.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getMappedBy()));
            } else {
                mapTblOwnerMapping = keyTable.getExternalMapping(mmd, MappingType.EXTERNAL_FK);
            }
            SQLTable keySqlTbl = stmt.join(JoinType.INNER_JOIN, mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping(), keyTable, null, mapTblOwnerMapping, null, null);
            // Add condition on key
            SQLExpression keyExpr = exprFactory.newExpression(stmt, keySqlTbl, keyTable.getIdMapping());
            stmt.whereAnd(keyExpr.eq(keyValExpr), true);
            // Return value expression
            JavaTypeMapping valueMapping = keyTable.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getValueMetaData().getMappedBy()));
            SQLExpression valueExpr = exprFactory.newExpression(stmt, keySqlTbl, valueMapping);
            return valueExpr;
        }
    }
    throw new NucleusException("Map.get() for the filter is not supported for " + mapExpr + " with an argument of " + keyValExpr + ". Why not contribute support for it?");
}

Example 33 with NucleusException

use of org.datanucleus.exceptions.NucleusException in project datanucleus-rdbms by datanucleus.

the class MapGetMethod method getAsSubquery.

/**
 * Implementation of Map.get() using a subquery on the table representing the map,
 * adding a condition on the key and returning the value.
 * @param stmt SQLStatement
 * @param mapExpr The map expression
 * @param keyValExpr The key value expression
 * @return The value expression
 */
protected SQLExpression getAsSubquery(SQLStatement stmt, MapExpression mapExpr, SQLExpression keyValExpr) {
    ClassLoaderResolver clr = stmt.getQueryGenerator().getClassLoaderResolver();
    AbstractMemberMetaData mmd = mapExpr.getJavaTypeMapping().getMemberMetaData();
    MapMetaData mapmd = mmd.getMap();
    RDBMSStoreManager storeMgr = stmt.getRDBMSManager();
    JavaTypeMapping ownerMapping = null;
    JavaTypeMapping keyMapping = null;
    JavaTypeMapping valMapping = null;
    Table mapTbl = null;
    if (mapmd.getMapType() == MapType.MAP_TYPE_JOIN) {
        // JoinTable
        mapTbl = storeMgr.getTable(mmd);
        ownerMapping = ((MapTable) mapTbl).getOwnerMapping();
        keyMapping = ((MapTable) mapTbl).getKeyMapping();
        valMapping = ((MapTable) mapTbl).getValueMapping();
    } else if (mapmd.getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE) {
        // ForeignKey from value table to key
        AbstractClassMetaData valCmd = mapmd.getValueClassMetaData(clr);
        mapTbl = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
        if (mmd.getMappedBy() != null) {
            ownerMapping = mapTbl.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
        } else {
            ownerMapping = ((DatastoreClass) mapTbl).getExternalMapping(mmd, MappingType.EXTERNAL_FK);
        }
        String keyFieldName = mmd.getKeyMetaData().getMappedBy();
        AbstractMemberMetaData valKeyMmd = valCmd.getMetaDataForMember(keyFieldName);
        keyMapping = mapTbl.getMemberMapping(valKeyMmd);
        valMapping = mapTbl.getIdMapping();
    } else if (mapmd.getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY) {
        // ForeignKey from key table to value
        AbstractClassMetaData keyCmd = mapmd.getKeyClassMetaData(clr);
        mapTbl = storeMgr.getDatastoreClass(mmd.getMap().getKeyType(), clr);
        if (mmd.getMappedBy() != null) {
            ownerMapping = mapTbl.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getMappedBy()));
        } else {
            ownerMapping = ((DatastoreClass) mapTbl).getExternalMapping(mmd, MappingType.EXTERNAL_FK);
        }
        keyMapping = mapTbl.getIdMapping();
        String valFieldName = mmd.getValueMetaData().getMappedBy();
        AbstractMemberMetaData keyValMmd = keyCmd.getMetaDataForMember(valFieldName);
        valMapping = mapTbl.getMemberMapping(keyValMmd);
    } else {
        throw new NucleusException("Invalid map for " + mapExpr + " in get() call");
    }
    SelectStatement subStmt = new SelectStatement(stmt, storeMgr, mapTbl, null, null);
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    subStmt.setClassLoaderResolver(clr);
    SQLExpression valExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valMapping);
    subStmt.select(valExpr, null);
    // Link to primary statement
    SQLExpression elementOwnerExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), ownerMapping);
    SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping());
    subStmt.whereAnd(elementOwnerExpr.eq(ownerIdExpr), true);
    // Condition on key
    SQLExpression keyExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), keyMapping);
    subStmt.whereAnd(keyExpr.eq(keyValExpr), true);
    SubqueryExpression subExpr = new SubqueryExpression(stmt, subStmt);
    subExpr.setJavaTypeMapping(valMapping);
    return subExpr;
}

Example 34 with NucleusException

use of org.datanucleus.exceptions.NucleusException in project datanucleus-rdbms by datanucleus.

the class MapValueMethod method getAsSubquery.

/**
 * Implementation of VALUE(map) using a subquery on the table representing the map, returning the value.
 * @param stmt SQLStatement
 * @param mapExpr The map expression
 * @return The value expression
 */
protected SQLExpression getAsSubquery(SQLStatement stmt, MapExpression mapExpr) {
    AbstractMemberMetaData mmd = mapExpr.getJavaTypeMapping().getMemberMetaData();
    MapMetaData mapmd = mmd.getMap();
    RDBMSStoreManager storeMgr = stmt.getRDBMSManager();
    ClassLoaderResolver clr = stmt.getQueryGenerator().getClassLoaderResolver();
    JavaTypeMapping ownerMapping = null;
    JavaTypeMapping valMapping = null;
    Table mapTbl = null;
    if (mapmd.getMapType() == MapType.MAP_TYPE_JOIN) {
        // JoinTable
        mapTbl = storeMgr.getTable(mmd);
        ownerMapping = ((MapTable) mapTbl).getOwnerMapping();
        valMapping = ((MapTable) mapTbl).getValueMapping();
    } else if (mapmd.getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE) {
        // ForeignKey from value table to key
        AbstractClassMetaData valCmd = mapmd.getValueClassMetaData(clr);
        mapTbl = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
        if (mmd.getMappedBy() != null) {
            ownerMapping = mapTbl.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
        } else {
            ownerMapping = ((DatastoreClass) mapTbl).getExternalMapping(mmd, MappingType.EXTERNAL_FK);
        }
        valMapping = mapTbl.getIdMapping();
    } else if (mapmd.getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY) {
        // ForeignKey from key table to value
        AbstractClassMetaData keyCmd = mapmd.getKeyClassMetaData(clr);
        mapTbl = storeMgr.getDatastoreClass(mmd.getMap().getKeyType(), clr);
        if (mmd.getMappedBy() != null) {
            ownerMapping = mapTbl.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getMappedBy()));
        } else {
            ownerMapping = ((DatastoreClass) mapTbl).getExternalMapping(mmd, MappingType.EXTERNAL_FK);
        }
        String valFieldName = mmd.getValueMetaData().getMappedBy();
        AbstractMemberMetaData keyValMmd = keyCmd.getMetaDataForMember(valFieldName);
        valMapping = mapTbl.getMemberMapping(keyValMmd);
    } else {
        throw new NucleusException("Invalid map for " + mapExpr + " in get() call");
    }
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    SelectStatement subStmt = new SelectStatement(stmt, storeMgr, mapTbl, null, null);
    subStmt.setClassLoaderResolver(clr);
    SQLExpression valExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), valMapping);
    subStmt.select(valExpr, null);
    // Link to primary statement
    SQLExpression elementOwnerExpr = exprFactory.newExpression(subStmt, subStmt.getPrimaryTable(), ownerMapping);
    SQLExpression ownerIdExpr = exprFactory.newExpression(stmt, mapExpr.getSQLTable(), mapExpr.getSQLTable().getTable().getIdMapping());
    subStmt.whereAnd(elementOwnerExpr.eq(ownerIdExpr), true);
    SubqueryExpression subExpr = new SubqueryExpression(stmt, subStmt);
    subExpr.setJavaTypeMapping(valMapping);
    return subExpr;
}

Example 35 with NucleusException

use of org.datanucleus.exceptions.NucleusException in project datanucleus-rdbms by datanucleus.

the class MapValueMethod method getAsJoin.

/**
 * Implementation of VALUE(map) using a join to the table representing the map, and returning the value.
 * @param parentStmt The parent SQL statement
 * @param mapExpr The map expression
 * @return The value expression
 */
protected SQLExpression getAsJoin(SQLStatement parentStmt, MapExpression mapExpr) {
    JavaTypeMapping m = mapExpr.getJavaTypeMapping();
    RDBMSStoreManager storeMgr = parentStmt.getRDBMSManager();
    ClassLoaderResolver clr = parentStmt.getQueryGenerator().getClassLoaderResolver();
    SQLExpressionFactory exprFactory = parentStmt.getSQLExpressionFactory();
    AbstractMemberMetaData mmd = m.getMemberMetaData();
    // Use the statement of the table for this Map expression, since it could be in an outer query
    SQLStatement stmt = mapExpr.getSQLTable().getSQLStatement();
    if (mmd != null) {
        MapMetaData mapmd = mmd.getMap();
        SQLTable mapSqlTbl = mapExpr.getSQLTable();
        // Set alias of "map" table from MapExpression in case it was defined in FROM clause
        String mapJoinAlias = mapExpr.getAliasForMapTable();
        if (mapJoinAlias == null) {
            mapJoinAlias = (mapExpr.getSQLTable().getAlias().toString() + "_" + mmd.getName()).toUpperCase();
        }
        if (mapmd.getMapType() == MapType.MAP_TYPE_JOIN) {
            // Add join to join table
            MapTable joinTbl = (MapTable) storeMgr.getTable(mmd);
            SQLTable joinSqlTbl = stmt.getTable(mapJoinAlias);
            if (joinSqlTbl == null) {
                joinSqlTbl = stmt.join(JoinType.INNER_JOIN, mapSqlTbl, mapSqlTbl.getTable().getIdMapping(), joinTbl, mapJoinAlias, joinTbl.getOwnerMapping(), null, null);
            }
            // Return value expression
            if (mapmd.getValueClassMetaData(clr) != null && !mapmd.isEmbeddedValue()) {
                // Persistable value so join to its table (default to "{mapJoinAlias}_VALUE")
                DatastoreClass valTable = storeMgr.getDatastoreClass(mapmd.getValueType(), clr);
                SQLTable valueSqlTbl = stmt.getTable(mapJoinAlias + "_VALUE");
                if (valueSqlTbl == null) {
                    valueSqlTbl = stmt.join(JoinType.INNER_JOIN, joinSqlTbl, joinTbl.getValueMapping(), valTable, mapJoinAlias + "_VALUE", valTable.getIdMapping(), null, null);
                }
                return exprFactory.newExpression(stmt, valueSqlTbl, valTable.getIdMapping());
            }
            return exprFactory.newExpression(stmt, joinSqlTbl, joinTbl.getValueMapping());
        } else if (mapmd.getMapType() == MapType.MAP_TYPE_KEY_IN_VALUE) {
            // Key stored in value table, so join to value table
            DatastoreClass valTable = storeMgr.getDatastoreClass(mapmd.getValueType(), clr);
            AbstractClassMetaData valCmd = mmd.getMap().getValueClassMetaData(clr);
            JavaTypeMapping mapTblOwnerMapping;
            if (mmd.getMappedBy() != null) {
                mapTblOwnerMapping = valTable.getMemberMapping(valCmd.getMetaDataForMember(mmd.getMappedBy()));
            } else {
                mapTblOwnerMapping = valTable.getExternalMapping(mmd, MappingType.EXTERNAL_FK);
            }
            SQLTable valSqlTbl = stmt.join(JoinType.INNER_JOIN, mapSqlTbl, mapSqlTbl.getTable().getIdMapping(), valTable, mapJoinAlias, mapTblOwnerMapping, null, null);
            // Return value expression
            return exprFactory.newExpression(stmt, valSqlTbl, valTable.getIdMapping());
        } else if (mapmd.getMapType() == MapType.MAP_TYPE_VALUE_IN_KEY) {
            // Value stored in key table, so join to key table
            DatastoreClass keyTable = storeMgr.getDatastoreClass(mapmd.getKeyType(), clr);
            AbstractClassMetaData keyCmd = mmd.getMap().getKeyClassMetaData(clr);
            JavaTypeMapping mapTblOwnerMapping;
            if (mmd.getMappedBy() != null) {
                mapTblOwnerMapping = keyTable.getMemberMapping(keyCmd.getMetaDataForMember(mmd.getMappedBy()));
            } else {
                mapTblOwnerMapping = keyTable.getExternalMapping(mmd, MappingType.EXTERNAL_FK);
            }
            SQLTable keySqlTbl = stmt.join(JoinType.INNER_JOIN, mapSqlTbl, mapSqlTbl.getTable().getIdMapping(), keyTable, mapJoinAlias, mapTblOwnerMapping, null, null);
            // Return value expression
            AbstractMemberMetaData valKeyMmd = mapmd.getKeyClassMetaData(clr).getMetaDataForMember(mmd.getValueMetaData().getMappedBy());
            JavaTypeMapping valueMapping = keyTable.getMemberMapping(valKeyMmd);
            return exprFactory.newExpression(stmt, keySqlTbl, valueMapping);
        }
    }
    throw new NucleusException("KEY(map) for the filter is not supported for " + mapExpr + ". Why not contribute support for it?");
}