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Example 6 with DatastoreClass

use of org.datanucleus.store.rdbms.table.DatastoreClass in project datanucleus-rdbms by datanucleus.

the class SQLQuery method compileInternal.

/**
 * Verify the elements of the query and provide a hint to the query to prepare and optimize an execution plan.
 */
public void compileInternal(Map parameterValues) {
    if (isCompiled) {
        return;
    }
    // Default to using the users SQL direct with no substitution of params etc
    compiledSQL = inputSQL;
    if (candidateClass != null && getType() == QueryType.SELECT) {
        // Perform any sanity checking of input for SELECT queries
        RDBMSStoreManager storeMgr = (RDBMSStoreManager) getStoreManager();
        ClassLoaderResolver clr = ec.getClassLoaderResolver();
        AbstractClassMetaData cmd = ec.getMetaDataManager().getMetaDataForClass(candidateClass, clr);
        if (cmd == null) {
            throw new ClassNotPersistableException(candidateClass.getName());
        }
        if (cmd.getPersistableSuperclass() != null) {
        // throw new PersistentSuperclassNotAllowedException(candidateClass.getName());
        }
        if (getResultClass() == null) {
            // Check the presence of the required columns (id, version, discriminator) in the candidate class
            // Skip "SELECT "
            String selections = stripComments(compiledSQL.trim()).substring(7);
            int fromStart = selections.indexOf("FROM");
            if (fromStart == -1) {
                fromStart = selections.indexOf("from");
            }
            selections = selections.substring(0, fromStart).trim();
            String[] selectedColumns = StringUtils.split(selections, ",");
            if (selectedColumns == null || selectedColumns.length == 0) {
                throw new NucleusUserException(Localiser.msg("059003", compiledSQL));
            }
            if (selectedColumns.length == 1 && selectedColumns[0].trim().equals("*")) {
            // SQL Query using * so just end the checking since all possible columns will be selected
            } else {
                // Generate id column field information for later checking the id is present
                DatastoreClass table = storeMgr.getDatastoreClass(candidateClass.getName(), clr);
                PersistableMapping idMapping = (PersistableMapping) table.getIdMapping();
                String[] idColNames = new String[idMapping.getNumberOfDatastoreMappings()];
                boolean[] idColMissing = new boolean[idMapping.getNumberOfDatastoreMappings()];
                for (int i = 0; i < idMapping.getNumberOfDatastoreMappings(); i++) {
                    idColNames[i] = idMapping.getDatastoreMapping(i).getColumn().getIdentifier().toString();
                    idColMissing[i] = true;
                }
                // Generate discriminator/version information for later checking they are present
                JavaTypeMapping discrimMapping = table.getSurrogateMapping(SurrogateColumnType.DISCRIMINATOR, false);
                String discriminatorColName = (discrimMapping != null) ? discrimMapping.getDatastoreMapping(0).getColumn().getIdentifier().toString() : null;
                JavaTypeMapping versionMapping = table.getSurrogateMapping(SurrogateColumnType.VERSION, false);
                String versionColName = (versionMapping != null) ? versionMapping.getDatastoreMapping(0).getColumn().getIdentifier().toString() : null;
                boolean discrimMissing = (discriminatorColName != null);
                boolean versionMissing = (versionColName != null);
                // Go through the selected fields and check the existence of id, version, discriminator cols
                DatastoreAdapter dba = storeMgr.getDatastoreAdapter();
                final AbstractClassMetaData candidateCmd = ec.getMetaDataManager().getMetaDataForClass(candidateClass, clr);
                for (int i = 0; i < selectedColumns.length; i++) {
                    String colName = selectedColumns[i].trim();
                    if (colName.indexOf(" AS ") > 0) {
                        // Allow for user specification of "XX.YY AS ZZ"
                        colName = colName.substring(colName.indexOf(" AS ") + 4).trim();
                    } else if (colName.indexOf(" as ") > 0) {
                        // Allow for user specification of "XX.YY as ZZ"
                        colName = colName.substring(colName.indexOf(" as ") + 4).trim();
                    }
                    if (candidateCmd.getIdentityType() == IdentityType.DATASTORE) {
                        // Check for existence of id column, allowing for any RDBMS using quoted identifiers
                        if (SQLQuery.columnNamesAreTheSame(dba, idColNames[0], colName)) {
                            idColMissing[0] = false;
                        }
                    } else if (candidateCmd.getIdentityType() == IdentityType.APPLICATION) {
                        for (int j = 0; j < idColNames.length; j++) {
                            // Check for existence of id column, allowing for any RDBMS using quoted identifiers
                            if (SQLQuery.columnNamesAreTheSame(dba, idColNames[j], colName)) {
                                idColMissing[j] = false;
                            }
                        }
                    }
                    if (discrimMissing && SQLQuery.columnNamesAreTheSame(dba, discriminatorColName, colName)) {
                        discrimMissing = false;
                    } else if (versionMissing && SQLQuery.columnNamesAreTheSame(dba, versionColName, colName)) {
                        versionMissing = false;
                    }
                }
                if (discrimMissing) {
                    throw new NucleusUserException(Localiser.msg("059014", compiledSQL, candidateClass.getName(), discriminatorColName));
                }
                if (versionMissing) {
                    throw new NucleusUserException(Localiser.msg("059015", compiledSQL, candidateClass.getName(), versionColName));
                }
                for (int i = 0; i < idColMissing.length; i++) {
                    if (idColMissing[i]) {
                        throw new NucleusUserException(Localiser.msg("059013", compiledSQL, candidateClass.getName(), idColNames[i]));
                    }
                }
            }
        }
    }
    if (NucleusLogger.QUERY.isDebugEnabled()) {
        NucleusLogger.QUERY.debug(Localiser.msg("059012", compiledSQL));
    }
    isCompiled = true;
}
Also used : JavaTypeMapping(org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping) NucleusUserException(org.datanucleus.exceptions.NucleusUserException) ClassLoaderResolver(org.datanucleus.ClassLoaderResolver) AbstractClassMetaData(org.datanucleus.metadata.AbstractClassMetaData) RDBMSStoreManager(org.datanucleus.store.rdbms.RDBMSStoreManager) PersistableMapping(org.datanucleus.store.rdbms.mapping.java.PersistableMapping) DatastoreAdapter(org.datanucleus.store.rdbms.adapter.DatastoreAdapter) DatastoreClass(org.datanucleus.store.rdbms.table.DatastoreClass) ClassNotPersistableException(org.datanucleus.exceptions.ClassNotPersistableException)

Example 7 with DatastoreClass

use of org.datanucleus.store.rdbms.table.DatastoreClass in project datanucleus-rdbms by datanucleus.

the class JDOQLQuery method compileQueryUpdate.

/**
 * Method to compile the query for RDBMS for a bulk update.
 * @param parameterValues The parameter values (if any)
 * @param candidateCmd Meta-data for the candidate class
 */
protected void compileQueryUpdate(Map parameterValues, AbstractClassMetaData candidateCmd) {
    Expression[] updateExprs = compilation.getExprUpdate();
    if (updateExprs == null || updateExprs.length == 0) {
        // Nothing to update
        return;
    }
    // Generate statement for candidate
    RDBMSStoreManager storeMgr = (RDBMSStoreManager) getStoreManager();
    DatastoreClass candidateTbl = storeMgr.getDatastoreClass(candidateCmd.getFullClassName(), clr);
    if (candidateTbl == null) {
        throw new NucleusDataStoreException("Bulk update of " + candidateCmd.getFullClassName() + " not supported since candidate has no table of its own");
    }
    List<BulkTable> tables = new ArrayList<>();
    tables.add(new BulkTable(candidateTbl, true));
    if (candidateTbl.getSuperDatastoreClass() != null) {
        DatastoreClass tbl = candidateTbl;
        while (tbl.getSuperDatastoreClass() != null) {
            tbl = tbl.getSuperDatastoreClass();
            tables.add(new BulkTable(tbl, false));
        }
    }
    List<SQLStatement> stmts = new ArrayList<>();
    List<Boolean> stmtCountFlags = new ArrayList<>();
    for (BulkTable bulkTable : tables) {
        // Generate statement for candidate
        DatastoreClass table = bulkTable.table;
        Map<String, Object> extensions = null;
        if (!storeMgr.getDatastoreAdapter().supportsOption(DatastoreAdapter.UPDATE_DELETE_STATEMENT_ALLOW_TABLE_ALIAS_IN_WHERE_CLAUSE)) {
            extensions = new HashMap<>();
            extensions.put(SQLStatement.EXTENSION_SQL_TABLE_NAMING_STRATEGY, "table-name");
        }
        UpdateStatement stmt = new UpdateStatement(storeMgr, table, null, null, extensions);
        stmt.setClassLoaderResolver(clr);
        stmt.setCandidateClassName(candidateCmd.getFullClassName());
        JavaTypeMapping multitenancyMapping = table.getSurrogateMapping(SurrogateColumnType.MULTITENANCY, false);
        if (multitenancyMapping != null) {
            // Multi-tenancy restriction
            SQLExpression tenantExpr = stmt.getSQLExpressionFactory().newExpression(stmt, stmt.getPrimaryTable(), multitenancyMapping);
            SQLExpression tenantVal = stmt.getSQLExpressionFactory().newLiteral(stmt, multitenancyMapping, ec.getNucleusContext().getMultiTenancyId(ec, candidateCmd));
            stmt.whereAnd(tenantExpr.eq(tenantVal), true);
        }
        // TODO Discriminator restriction?
        JavaTypeMapping softDeleteMapping = table.getSurrogateMapping(SurrogateColumnType.SOFTDELETE, false);
        if (softDeleteMapping != null) {
            // Soft-delete restriction
            SQLExpression softDeleteExpr = stmt.getSQLExpressionFactory().newExpression(stmt, stmt.getPrimaryTable(), softDeleteMapping);
            SQLExpression softDeleteVal = stmt.getSQLExpressionFactory().newLiteral(stmt, softDeleteMapping, Boolean.FALSE);
            stmt.whereAnd(softDeleteExpr.eq(softDeleteVal), true);
        }
        Set<String> options = new HashSet<>();
        if (getBooleanExtensionProperty(EXTENSION_USE_IS_NULL_WHEN_EQUALS_NULL_PARAM, true)) {
            options.add(QueryToSQLMapper.OPTION_NULL_PARAM_USE_IS_NULL);
        }
        QueryToSQLMapper sqlMapper = new QueryToSQLMapper(stmt, compilation, parameterValues, null, null, candidateCmd, subclasses, getFetchPlan(), ec, null, options, extensions);
        setMapperJoinTypes(sqlMapper);
        sqlMapper.compile();
        if (stmt.hasUpdates()) {
            stmts.add(stmt);
            stmtCountFlags.add(bulkTable.useInCount);
            datastoreCompilation.setStatementParameters(stmt.getSQLText().getParametersForStatement());
            datastoreCompilation.setPrecompilable(sqlMapper.isPrecompilable());
        }
    }
    datastoreCompilation.clearStatements();
    Iterator<SQLStatement> stmtIter = stmts.iterator();
    Iterator<Boolean> stmtCountFlagsIter = stmtCountFlags.iterator();
    while (stmtIter.hasNext()) {
        SQLStatement stmt = stmtIter.next();
        Boolean useInCount = stmtCountFlagsIter.next();
        if (stmts.size() == 1) {
            useInCount = true;
        }
        datastoreCompilation.addStatement(stmt, stmt.getSQLText().toSQL(), useInCount);
    }
}
Also used : UpdateStatement(org.datanucleus.store.rdbms.sql.UpdateStatement) SQLExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression) JavaTypeMapping(org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping) ArrayList(java.util.ArrayList) SQLStatement(org.datanucleus.store.rdbms.sql.SQLStatement) RDBMSStoreManager(org.datanucleus.store.rdbms.RDBMSStoreManager) NucleusDataStoreException(org.datanucleus.exceptions.NucleusDataStoreException) Expression(org.datanucleus.query.expression.Expression) BooleanExpression(org.datanucleus.store.rdbms.sql.expression.BooleanExpression) SQLExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression) DatastoreClass(org.datanucleus.store.rdbms.table.DatastoreClass) HashSet(java.util.HashSet)

Example 8 with DatastoreClass

use of org.datanucleus.store.rdbms.table.DatastoreClass in project datanucleus-rdbms by datanucleus.

the class JPQLQuery method compileQueryInsert.

/**
 * Method to compile the query for RDBMS for a bulk INSERT.
 * @param parameterValues The parameter values (if any)
 * @param candidateCmd Meta-data for the candidate class
 */
protected void compileQueryInsert(Map parameterValues, AbstractClassMetaData candidateCmd) {
    if (StringUtils.isWhitespace(insertFields) || StringUtils.isWhitespace(insertSelectQuery)) {
        // Nothing to INSERT
        return;
    }
    List<String> fieldNames = new ArrayList<>();
    StringTokenizer fieldTokenizer = new StringTokenizer(insertFields, ",");
    while (fieldTokenizer.hasMoreTokens()) {
        String token = fieldTokenizer.nextToken().trim();
        fieldNames.add(token);
    }
    // Generate statement for candidate and related classes in this inheritance tree
    RDBMSStoreManager storeMgr = (RDBMSStoreManager) getStoreManager();
    DatastoreClass candidateTbl = storeMgr.getDatastoreClass(candidateCmd.getFullClassName(), clr);
    if (candidateTbl == null) {
        // TODO Using subclass-table, so find the table(s) it can be persisted into
        throw new NucleusDataStoreException("Bulk INSERT of " + candidateCmd.getFullClassName() + " not supported since candidate has no table of its own");
    }
    // Find table(s) that need populating with this information
    List<BulkTable> tables = new ArrayList<>();
    tables.add(new BulkTable(candidateTbl, true));
    if (candidateTbl.getSuperDatastoreClass() != null) {
        DatastoreClass tbl = candidateTbl;
        while (tbl.getSuperDatastoreClass() != null) {
            tbl = tbl.getSuperDatastoreClass();
            tables.add(0, new BulkTable(tbl, false));
        }
    }
    if (tables.size() > 1) {
        throw new NucleusUserException("BULK INSERT only currently allows a single table, but this query implies INSERT into " + tables.size() + " tables!");
    }
    List<SQLStatement> stmts = new ArrayList<>();
    List<Boolean> stmtCountFlags = new ArrayList<>();
    for (BulkTable bulkTable : tables) {
        // Generate statement for candidate
        InsertStatement stmt = new InsertStatement(storeMgr, bulkTable.table, null, null, null);
        stmt.setClassLoaderResolver(clr);
        stmt.setCandidateClassName(candidateCmd.getFullClassName());
        // Set columns for this table
        for (String fieldName : fieldNames) {
            AbstractMemberMetaData fieldMmd = candidateCmd.getMetaDataForMember(fieldName);
            if (fieldMmd == null) {
            // No such field
            } else {
                JavaTypeMapping fieldMapping = bulkTable.table.getMemberMapping(fieldMmd);
                if (fieldMapping != null) {
                    SQLExpression fieldExpr = stmt.getSQLExpressionFactory().newExpression(stmt, stmt.getPrimaryTable(), fieldMapping);
                    for (int i = 0; i < fieldExpr.getNumberOfSubExpressions(); i++) {
                        ColumnExpression fieldColExpr = fieldExpr.getSubExpression(i);
                        fieldColExpr.setOmitTableFromString(true);
                    }
                    stmt.addColumn(fieldExpr);
                } else {
                // Not in this table
                }
            }
        }
        // Generate the select query and add it to the InsertStatement
        JPQLQuery selectQuery = new JPQLQuery(storeMgr, ec, insertSelectQuery);
        selectQuery.compile();
        stmt.setSelectStatement((SelectStatement) selectQuery.getDatastoreCompilation().getStatementCompilations().get(0).getStatement());
        selectQuery.closeAll();
        // TODO if we have multiple tables then this will mean only using some of the columns in the selectSQL
        stmts.add(stmt);
        stmtCountFlags.add(bulkTable.useInCount);
        datastoreCompilation.setStatementParameters(stmt.getSQLText().getParametersForStatement());
    }
    datastoreCompilation.clearStatements();
    Iterator<SQLStatement> stmtIter = stmts.iterator();
    Iterator<Boolean> stmtCountFlagsIter = stmtCountFlags.iterator();
    while (stmtIter.hasNext()) {
        SQLStatement stmt = stmtIter.next();
        Boolean useInCount = stmtCountFlagsIter.next();
        if (stmts.size() == 1) {
            useInCount = true;
        }
        datastoreCompilation.addStatement(stmt, stmt.getSQLText().toSQL(), useInCount);
    }
}
Also used : SQLExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression) JavaTypeMapping(org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping) NucleusUserException(org.datanucleus.exceptions.NucleusUserException) ArrayList(java.util.ArrayList) SQLStatement(org.datanucleus.store.rdbms.sql.SQLStatement) InsertStatement(org.datanucleus.store.rdbms.sql.InsertStatement) RDBMSStoreManager(org.datanucleus.store.rdbms.RDBMSStoreManager) NucleusDataStoreException(org.datanucleus.exceptions.NucleusDataStoreException) StringTokenizer(java.util.StringTokenizer) ColumnExpression(org.datanucleus.store.rdbms.sql.expression.ColumnExpression) DatastoreClass(org.datanucleus.store.rdbms.table.DatastoreClass) AbstractJPQLQuery(org.datanucleus.store.query.AbstractJPQLQuery) AbstractMemberMetaData(org.datanucleus.metadata.AbstractMemberMetaData)

Example 9 with DatastoreClass

use of org.datanucleus.store.rdbms.table.DatastoreClass in project datanucleus-rdbms by datanucleus.

the class JPQLQuery method compileQueryDelete.

/**
 * Method to compile the query for RDBMS for a bulk delete.
 * @param parameterValues The parameter values (if any)
 * @param candidateCmd Meta-data for the candidate class
 */
protected void compileQueryDelete(Map parameterValues, AbstractClassMetaData candidateCmd) {
    RDBMSStoreManager storeMgr = (RDBMSStoreManager) getStoreManager();
    DatastoreClass candidateTbl = storeMgr.getDatastoreClass(candidateCmd.getFullClassName(), clr);
    if (candidateTbl == null) {
        // TODO Using subclass-table, so find the table(s) it can be persisted into
        throw new NucleusDataStoreException("Bulk delete of " + candidateCmd.getFullClassName() + " not supported since candidate has no table of its own");
    }
    InheritanceStrategy inhStr = candidateCmd.getBaseAbstractClassMetaData().getInheritanceMetaData().getStrategy();
    List<BulkTable> tables = new ArrayList<>();
    tables.add(new BulkTable(candidateTbl, true));
    if (inhStr != InheritanceStrategy.COMPLETE_TABLE) {
        // Add deletion from superclass tables since we will have an entry there
        while (candidateTbl.getSuperDatastoreClass() != null) {
            candidateTbl = candidateTbl.getSuperDatastoreClass();
            tables.add(new BulkTable(candidateTbl, false));
        }
    }
    Collection<String> subclassNames = storeMgr.getSubClassesForClass(candidateCmd.getFullClassName(), true, clr);
    if (subclassNames != null && !subclassNames.isEmpty()) {
        // Check for subclasses having their own tables and hence needing multiple DELETEs
        Iterator<String> iter = subclassNames.iterator();
        while (iter.hasNext()) {
            String subclassName = iter.next();
            DatastoreClass subclassTbl = storeMgr.getDatastoreClass(subclassName, clr);
            if (candidateTbl != subclassTbl) {
                // Only include BulkTable in count if using COMPLETE_TABLE strategy
                tables.add(0, new BulkTable(subclassTbl, inhStr == InheritanceStrategy.COMPLETE_TABLE));
            }
        }
    }
    List<SQLStatement> stmts = new ArrayList<>();
    List<Boolean> stmtCountFlags = new ArrayList<>();
    for (BulkTable bulkTable : tables) {
        // Generate statement for candidate
        DatastoreClass table = bulkTable.table;
        JavaTypeMapping softDeleteMapping = table.getSurrogateMapping(SurrogateColumnType.SOFTDELETE, false);
        if (softDeleteMapping != null) {
            throw new NucleusUserException("Cannot use BulkDelete queries when using SoftDelete on an affected table (" + table + ")");
        }
        Map<String, Object> extensions = null;
        if (!storeMgr.getDatastoreAdapter().supportsOption(DatastoreAdapter.UPDATE_DELETE_STATEMENT_ALLOW_TABLE_ALIAS_IN_WHERE_CLAUSE)) {
            extensions = new HashMap<>();
            extensions.put(SQLStatement.EXTENSION_SQL_TABLE_NAMING_STRATEGY, "table-name");
        }
        SQLStatement stmt = new DeleteStatement(storeMgr, table, null, null, extensions);
        stmt.setClassLoaderResolver(clr);
        stmt.setCandidateClassName(candidateCmd.getFullClassName());
        JavaTypeMapping multitenancyMapping = table.getSurrogateMapping(SurrogateColumnType.MULTITENANCY, false);
        if (multitenancyMapping != null) {
            // Multi-tenancy restriction
            SQLTable tenantSqlTbl = stmt.getPrimaryTable();
            SQLExpression tenantExpr = stmt.getSQLExpressionFactory().newExpression(stmt, tenantSqlTbl, multitenancyMapping);
            SQLExpression tenantVal = stmt.getSQLExpressionFactory().newLiteral(stmt, multitenancyMapping, ec.getNucleusContext().getMultiTenancyId(ec, candidateCmd));
            stmt.whereAnd(tenantExpr.eq(tenantVal), true);
        }
        // TODO Discriminator restriction?
        Set<String> options = new HashSet<>();
        options.add(QueryToSQLMapper.OPTION_CASE_INSENSITIVE);
        options.add(QueryToSQLMapper.OPTION_EXPLICIT_JOINS);
        if (// Default to false for "IS NULL" with null param
        getBooleanExtensionProperty(EXTENSION_USE_IS_NULL_WHEN_EQUALS_NULL_PARAM, false)) {
            options.add(QueryToSQLMapper.OPTION_NULL_PARAM_USE_IS_NULL);
        }
        QueryToSQLMapper sqlMapper = new QueryToSQLMapper(stmt, compilation, parameterValues, null, null, candidateCmd, subclasses, getFetchPlan(), ec, null, options, extensions);
        setMapperJoinTypes(sqlMapper);
        sqlMapper.compile();
        stmts.add(stmt);
        stmtCountFlags.add(bulkTable.useInCount);
        datastoreCompilation.setStatementParameters(stmt.getSQLText().getParametersForStatement());
        datastoreCompilation.setPrecompilable(sqlMapper.isPrecompilable());
    }
    datastoreCompilation.clearStatements();
    Iterator<SQLStatement> stmtIter = stmts.iterator();
    Iterator<Boolean> stmtCountFlagsIter = stmtCountFlags.iterator();
    while (stmtIter.hasNext()) {
        SQLStatement stmt = stmtIter.next();
        Boolean useInCount = stmtCountFlagsIter.next();
        if (stmts.size() == 1) {
            useInCount = true;
        }
        datastoreCompilation.addStatement(stmt, stmt.getSQLText().toSQL(), useInCount);
    }
}
Also used : SQLExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression) JavaTypeMapping(org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping) ArrayList(java.util.ArrayList) SQLStatement(org.datanucleus.store.rdbms.sql.SQLStatement) DeleteStatement(org.datanucleus.store.rdbms.sql.DeleteStatement) NucleusDataStoreException(org.datanucleus.exceptions.NucleusDataStoreException) SQLTable(org.datanucleus.store.rdbms.sql.SQLTable) HashSet(java.util.HashSet) NucleusUserException(org.datanucleus.exceptions.NucleusUserException) RDBMSStoreManager(org.datanucleus.store.rdbms.RDBMSStoreManager) InheritanceStrategy(org.datanucleus.metadata.InheritanceStrategy) DatastoreClass(org.datanucleus.store.rdbms.table.DatastoreClass)

Example 10 with DatastoreClass

use of org.datanucleus.store.rdbms.table.DatastoreClass in project datanucleus-rdbms by datanucleus.

the class QueryToSQLMapper method processFromClauseSubquery.

/**
 * Method to process a ClassExpression where it represents a subquery.
 * User defined the candidate of the subquery as an implied join to the outer query, for example "SELECT c FROM Customer c WHERE EXISTS (SELECT o FROM c.orders o ...)"
 * so this method will add the join(s) to the outer query.
 * @param clsExpr The ClassExpression
 * @param candSqlTbl Candidate SQL Table
 * @param mmgr MetaData Manager
 */
protected void processFromClauseSubquery(ClassExpression clsExpr, SQLTable candSqlTbl, MetaDataManager mmgr) {
    String[] tokens = StringUtils.split(clsExpr.getCandidateExpression(), ".");
    String leftAlias = tokens[0];
    SQLTableMapping outerSqlTblMapping = parentMapper.getSQLTableMappingForAlias(leftAlias);
    AbstractClassMetaData leftCmd = outerSqlTblMapping.cmd;
    // Get array of the left-right sides of this expression so we can work back from the subquery candidate
    AbstractMemberMetaData[] leftMmds = new AbstractMemberMetaData[tokens.length - 1];
    AbstractMemberMetaData[] rightMmds = new AbstractMemberMetaData[tokens.length - 1];
    for (int i = 0; i < tokens.length - 1; i++) {
        String joinedField = tokens[i + 1];
        AbstractMemberMetaData leftMmd = leftCmd.getMetaDataForMember(joinedField);
        AbstractMemberMetaData rightMmd = null;
        AbstractClassMetaData rightCmd = null;
        RelationType relationType = leftMmd.getRelationType(clr);
        if (RelationType.isBidirectional(relationType)) {
            // Take first possible
            rightMmd = leftMmd.getRelatedMemberMetaData(clr)[0];
            rightCmd = rightMmd.getAbstractClassMetaData();
        } else if (relationType == RelationType.ONE_TO_ONE_UNI) {
            rightCmd = mmgr.getMetaDataForClass(leftMmd.getType(), clr);
        } else if (relationType == RelationType.ONE_TO_MANY_UNI) {
            if (leftMmd.hasCollection()) {
                rightCmd = mmgr.getMetaDataForClass(leftMmd.getCollection().getElementType(), clr);
            } else if (leftMmd.hasMap()) {
                rightCmd = mmgr.getMetaDataForClass(leftMmd.getMap().getValueType(), clr);
            }
        } else {
            throw new NucleusUserException("Subquery has been specified with a candidate-expression that includes \"" + tokens[i] + "\" that isnt a relation field!!");
        }
        leftMmds[i] = leftMmd;
        rightMmds[i] = rightMmd;
        leftCmd = rightCmd;
    }
    // Work from subquery candidate back to outer query table, adding joins and where clause as appropriate
    SQLTable rSqlTbl = candSqlTbl;
    SQLTable outerSqlTbl = outerSqlTblMapping.table;
    JoinType joinType = JoinType.INNER_JOIN;
    for (int i = leftMmds.length - 1; i >= 0; i--) {
        AbstractMemberMetaData leftMmd = leftMmds[i];
        AbstractMemberMetaData rightMmd = rightMmds[i];
        DatastoreClass leftTbl = storeMgr.getDatastoreClass(leftMmd.getClassName(true), clr);
        SQLTable lSqlTbl = null;
        RelationType relationType = leftMmd.getRelationType(clr);
        if (relationType == RelationType.ONE_TO_ONE_UNI) {
            // 1-1 with FK in left table
            if (i == 0) {
                // Add where clause right table to outer table
                SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getMemberMapping(leftMmd));
                SQLExpression rightExpr = exprFactory.newExpression(stmt, rSqlTbl, rSqlTbl.getTable().getIdMapping());
                stmt.whereAnd(outerExpr.eq(rightExpr), false);
            } else {
                // Join to left table
                JavaTypeMapping leftMapping = leftTbl.getMemberMapping(leftMmd);
                lSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), leftTbl, null, leftMapping, null, null, true);
            }
        } else if (relationType == RelationType.ONE_TO_ONE_BI) {
            if (leftMmd.getMappedBy() != null) {
                // 1-1 with FK in right table
                JavaTypeMapping rightMapping = rSqlTbl.getTable().getMemberMapping(rightMmd);
                if (i == 0) {
                    // Add where clause right table to outer table
                    SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getIdMapping());
                    SQLExpression rightExpr = exprFactory.newExpression(stmt, rSqlTbl, rightMapping);
                    stmt.whereAnd(outerExpr.eq(rightExpr), false);
                } else {
                    // Join to left table
                    lSqlTbl = stmt.join(joinType, rSqlTbl, rightMapping, leftTbl, null, leftTbl.getIdMapping(), null, null, true);
                }
            } else {
                // 1-1 with FK in left table
                if (i == 0) {
                    // Add where clause right table to outer table
                    SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getMemberMapping(leftMmd));
                    SQLExpression rightExpr = exprFactory.newExpression(stmt, rSqlTbl, rSqlTbl.getTable().getIdMapping());
                    stmt.whereAnd(outerExpr.eq(rightExpr), false);
                } else {
                    // Join to left table
                    lSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), leftTbl, null, leftTbl.getMemberMapping(leftMmd), null, null, true);
                }
            }
        } else if (relationType == RelationType.ONE_TO_MANY_UNI) {
            if (leftMmd.getJoinMetaData() != null || rightMmd.getJoinMetaData() != null) {
                // 1-N with join table to right table, so join from right to join table
                JoinTable joinTbl = (JoinTable) storeMgr.getTable(leftMmd);
                SQLTable joinSqlTbl = null;
                if (leftMmd.hasCollection()) {
                    joinSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), joinTbl, null, ((ElementContainerTable) joinTbl).getElementMapping(), null, null, true);
                } else if (leftMmd.hasMap()) {
                    joinSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), joinTbl, null, ((MapTable) joinTbl).getValueMapping(), null, null, true);
                }
                if (i == 0) {
                    // Add where clause join table (owner) to outer table (id)
                    SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getIdMapping());
                    SQLExpression joinExpr = exprFactory.newExpression(stmt, joinSqlTbl, joinTbl.getOwnerMapping());
                    stmt.whereAnd(outerExpr.eq(joinExpr), false);
                } else {
                    // Join to left table
                    lSqlTbl = stmt.join(joinType, joinSqlTbl, joinTbl.getOwnerMapping(), leftTbl, null, leftTbl.getIdMapping(), null, null, true);
                }
            } else {
                // 1-N with FK in right table
                if (i == 0) {
                    // Add where clause right table to outer table
                    SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getMemberMapping(leftMmd));
                    SQLExpression rightExpr = exprFactory.newExpression(stmt, rSqlTbl, rSqlTbl.getTable().getMemberMapping(rightMmd));
                    stmt.whereAnd(outerExpr.eq(rightExpr), false);
                } else {
                    // Join to left table
                    lSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getMemberMapping(rightMmd), leftTbl, null, leftTbl.getIdMapping(), null, null, true);
                }
            }
        } else if (relationType == RelationType.ONE_TO_MANY_BI) {
            if (leftMmd.getJoinMetaData() != null || rightMmd.getJoinMetaData() != null) {
                // 1-N with join table to right table, so join from right to join table
                JoinTable joinTbl = (JoinTable) storeMgr.getTable(leftMmd);
                SQLTable joinSqlTbl = null;
                if (leftMmd.hasCollection()) {
                    joinSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), joinTbl, null, ((ElementContainerTable) joinTbl).getElementMapping(), null, null, true);
                } else if (leftMmd.hasMap()) {
                    joinSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), joinTbl, null, ((MapTable) joinTbl).getValueMapping(), null, null, true);
                }
                if (i == 0) {
                    // Add where clause join table (owner) to outer table (id)
                    SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getIdMapping());
                    SQLExpression joinExpr = exprFactory.newExpression(stmt, joinSqlTbl, joinTbl.getOwnerMapping());
                    stmt.whereAnd(outerExpr.eq(joinExpr), false);
                } else {
                    // Join to left table
                    lSqlTbl = stmt.join(joinType, joinSqlTbl, joinTbl.getOwnerMapping(), leftTbl, null, leftTbl.getIdMapping(), null, null, true);
                }
            } else {
                // 1-N with FK in right table
                if (i == 0) {
                    // Add where clause right table to outer table
                    SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getIdMapping());
                    SQLExpression rightExpr = exprFactory.newExpression(stmt, rSqlTbl, rSqlTbl.getTable().getMemberMapping(rightMmd));
                    stmt.whereAnd(outerExpr.eq(rightExpr), false);
                } else {
                    // Join to left table
                    lSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getMemberMapping(rightMmd), leftTbl, null, leftTbl.getIdMapping(), null, null, true);
                }
            }
        } else if (relationType == RelationType.MANY_TO_ONE_BI) {
            if (leftMmd.getJoinMetaData() != null || rightMmd.getJoinMetaData() != null) {
                // 1-N with join table to right table, so join from right to join table
                JoinTable joinTbl = (JoinTable) storeMgr.getTable(leftMmd);
                SQLTable joinSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), joinTbl, null, joinTbl.getOwnerMapping(), null, null, true);
                if (leftMmd.hasCollection()) {
                    if (i == 0) {
                        // Add where clause join table (element) to outer table (id)
                        SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getIdMapping());
                        SQLExpression joinExpr = exprFactory.newExpression(stmt, joinSqlTbl, ((ElementContainerTable) joinTbl).getElementMapping());
                        stmt.whereAnd(outerExpr.eq(joinExpr), false);
                    } else {
                        // Join to left table
                        lSqlTbl = stmt.join(joinType, joinSqlTbl, ((ElementContainerTable) joinTbl).getElementMapping(), leftTbl, null, leftTbl.getIdMapping(), null, null, true);
                    }
                } else if (leftMmd.hasMap()) {
                    if (i == 0) {
                        // Add where clause join table (value) to outer table (id)
                        SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getIdMapping());
                        SQLExpression joinExpr = exprFactory.newExpression(stmt, joinSqlTbl, ((MapTable) joinTbl).getValueMapping());
                        stmt.whereAnd(outerExpr.eq(joinExpr), false);
                    } else {
                        // Join to left table
                        lSqlTbl = stmt.join(joinType, joinSqlTbl, ((MapTable) joinTbl).getValueMapping(), leftTbl, null, leftTbl.getIdMapping(), null, null, true);
                    }
                }
            } else {
                if (i == 0) {
                    // Add where clause right table to outer table
                    SQLExpression outerExpr = exprFactory.newExpression(outerSqlTbl.getSQLStatement(), outerSqlTbl, outerSqlTbl.getTable().getMemberMapping(leftMmd));
                    SQLExpression rightExpr = exprFactory.newExpression(stmt, rSqlTbl, rSqlTbl.getTable().getIdMapping());
                    stmt.whereAnd(outerExpr.eq(rightExpr), false);
                } else {
                    // Join to left table
                    lSqlTbl = stmt.join(joinType, rSqlTbl, rSqlTbl.getTable().getIdMapping(), leftTbl, null, leftTbl.getMemberMapping(leftMmd), null, null, true);
                }
            }
        }
        rSqlTbl = lSqlTbl;
    }
}
Also used : SQLExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression) JavaTypeMapping(org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping) NucleusUserException(org.datanucleus.exceptions.NucleusUserException) JoinType(org.datanucleus.store.rdbms.sql.SQLJoin.JoinType) AbstractClassMetaData(org.datanucleus.metadata.AbstractClassMetaData) MapTable(org.datanucleus.store.rdbms.table.MapTable) RelationType(org.datanucleus.metadata.RelationType) SQLTable(org.datanucleus.store.rdbms.sql.SQLTable) DatastoreClass(org.datanucleus.store.rdbms.table.DatastoreClass) AbstractMemberMetaData(org.datanucleus.metadata.AbstractMemberMetaData) ElementContainerTable(org.datanucleus.store.rdbms.table.ElementContainerTable) JoinTable(org.datanucleus.store.rdbms.table.JoinTable)

Aggregations

DatastoreClass (org.datanucleus.store.rdbms.table.DatastoreClass)87 JavaTypeMapping (org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping)60 AbstractClassMetaData (org.datanucleus.metadata.AbstractClassMetaData)49 AbstractMemberMetaData (org.datanucleus.metadata.AbstractMemberMetaData)48 ClassLoaderResolver (org.datanucleus.ClassLoaderResolver)44 RDBMSStoreManager (org.datanucleus.store.rdbms.RDBMSStoreManager)41 SQLExpression (org.datanucleus.store.rdbms.sql.expression.SQLExpression)35 SQLTable (org.datanucleus.store.rdbms.sql.SQLTable)32 SQLExpressionFactory (org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory)28 NucleusUserException (org.datanucleus.exceptions.NucleusUserException)26 SelectStatement (org.datanucleus.store.rdbms.sql.SelectStatement)21 MapTable (org.datanucleus.store.rdbms.table.MapTable)19 NucleusException (org.datanucleus.exceptions.NucleusException)18 SecondaryDatastoreClass (org.datanucleus.store.rdbms.table.SecondaryDatastoreClass)15 ArrayList (java.util.ArrayList)14 ExecutionContext (org.datanucleus.ExecutionContext)13 JoinTable (org.datanucleus.store.rdbms.table.JoinTable)13 Table (org.datanucleus.store.rdbms.table.Table)13 NucleusDataStoreException (org.datanucleus.exceptions.NucleusDataStoreException)11 UnboundExpression (org.datanucleus.store.rdbms.sql.expression.UnboundExpression)11