Examples with MapperManager org.talend.designer.dbmap.managers.MapperManager used on opensource projects

Example 1 with MapperManager

use of org.talend.designer.dbmap.managers.MapperManager in project tdi-studio-se by Talend.

the class OracleGenerationManager method buildSqlSelect.

/**
     * 
     * ggu Comment method "buildSqlSelect".
     * 
     * @param component
     * @param outputTableName
     * @param tabSpaceString
     * @return
     */
@Override
public String buildSqlSelect(DbMapComponent component, String outputTableName, String tabString) {
    //$NON-NLS-1$
    queryColumnsName = "\"";
    aliasAlreadyDeclared.clear();
    this.tabSpaceString = tabString;
    List<IConnection> outputConnections = (List<IConnection>) component.getOutgoingConnections();
    Map<String, IConnection> nameToOutputConnection = new HashMap<String, IConnection>();
    for (IConnection connection : outputConnections) {
        nameToOutputConnection.put(connection.getUniqueName(), connection);
    }
    ExternalDbMapData data = (ExternalDbMapData) component.getExternalData();
    StringBuilder sb = new StringBuilder();
    List<ExternalDbMapTable> outputTables = data.getOutputTables();
    int lstOutputTablesSize = outputTables.size();
    ExternalDbMapTable outputTable = null;
    for (int i = 0; i < lstOutputTablesSize; i++) {
        ExternalDbMapTable temp = outputTables.get(i);
        if (outputTableName.equals(temp.getName())) {
            outputTable = temp;
            break;
        }
    }
    if (outputTable != null) {
        IConnection connection = nameToOutputConnection.get(outputTable.getName());
        List<IMetadataColumn> columns = new ArrayList<IMetadataColumn>();
        if (connection != null) {
            IMetadataTable metadataTable = connection.getMetadataTable();
            if (metadataTable != null) {
                columns.addAll(metadataTable.getListColumns());
            // call this function seems no use now but only problems
            // outputTable = removeUnmatchingEntriesWithColumnsOfMetadataTable(outputTable, metadataTable);
            }
        }
        //$NON-NLS-1$
        sb.append("\"");
        sb.append(DbMapSqlConstants.SELECT);
        sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
        List<ExternalDbMapEntry> metadataTableEntries = outputTable.getMetadataTableEntries();
        if (metadataTableEntries != null) {
            int lstSizeOutTableEntries = metadataTableEntries.size();
            for (int i = 0; i < lstSizeOutTableEntries; i++) {
                ExternalDbMapEntry dbMapEntry = metadataTableEntries.get(i);
                String expression = dbMapEntry.getExpression();
                expression = initExpression(component, dbMapEntry);
                expression = addQuoteForSpecialChar(expression, component);
                // for (IMetadataColumn column : columns) {
                // if (expression != null && column.getLabel().equals(dbMapEntry.getName())) {
                //                            expression = expression.replaceFirst("." + dbMapEntry.getName(), //$NON-NLS-1$
                //                                    "." + column.getOriginalDbColumnName()); //$NON-NLS-1$
                // break;
                // }
                // }
                boolean added = false;
                if (!DEFAULT_TAB_SPACE_STRING.equals(this.tabSpaceString)) {
                    expression += DbMapSqlConstants.SPACE + DbMapSqlConstants.AS + DbMapSqlConstants.SPACE + getAliasOf(dbMapEntry.getName());
                    added = true;
                }
                if (i > 0) {
                    sb.append(DbMapSqlConstants.COMMA);
                    sb.append(DbMapSqlConstants.SPACE);
                    queryColumnsName += DbMapSqlConstants.COMMA + DbMapSqlConstants.SPACE;
                }
                if (expression != null && expression.trim().length() > 0) {
                    sb.append(expression);
                    if (component.getMapperMain() == null) {
                        component.getExternalEmfData();
                    }
                    if (component.getMapperMain() != null) {
                        MapperManager mapperManager = component.getMapperMain().getMapperManager();
                        DataMapExpressionParser dataMapExpressionParser = new DataMapExpressionParser(mapperManager.getCurrentLanguage());
                        TableEntryLocation[] tableEntriesLocationsSources = dataMapExpressionParser.parseTableEntryLocations(expression);
                        boolean columnChanged = false;
                        if (tableEntriesLocationsSources.length > 1) {
                            columnChanged = true;
                        } else {
                            for (TableEntryLocation tableEntriesLocationsSource : tableEntriesLocationsSources) {
                                TableEntryLocation location = tableEntriesLocationsSource;
                                String entryName = getAliasOf(dbMapEntry.getName());
                                if (location != null && entryName != null && !entryName.startsWith("_") && !entryName.equals(location.columnName)) {
                                    //$NON-NLS-1$
                                    columnChanged = true;
                                }
                            }
                        }
                        if (!added && columnChanged) {
                            sb.append(DbMapSqlConstants.SPACE + DbMapSqlConstants.AS + DbMapSqlConstants.SPACE + getAliasOf(dbMapEntry.getName()));
                        }
                    }
                    queryColumnsName += expression;
                } else {
                    sb.append(DbMapSqlConstants.LEFT_COMMENT);
                    String str = outputTable.getName() + DbMapSqlConstants.DOT + dbMapEntry.getName();
                    //$NON-NLS-1$
                    sb.append(Messages.getString("DbGenerationManager.OuputExpSetMessage", str));
                    sb.append(DbMapSqlConstants.RIGHT_COMMENT);
                }
            }
        }
        sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
        sb.append(DbMapSqlConstants.FROM);
        List<ExternalDbMapTable> inputTables = data.getInputTables();
        // load input table in hash
        boolean explicitJoin = false;
        int lstSizeInputTables = inputTables.size();
        Map<String, ExternalDbMapTable> nameToInputTable = new HashMap<String, ExternalDbMapTable>();
        for (int i = 0; i < lstSizeInputTables; i++) {
            ExternalDbMapTable inputTable = inputTables.get(i);
            nameToInputTable.put(inputTable.getName(), inputTable);
            IJoinType joinType = language.getJoin(inputTable.getJoinType());
            if (!language.unuseWithExplicitJoin().contains(joinType) && i > 0) {
                explicitJoin = true;
            }
        }
        StringBuilder sbWhere = new StringBuilder();
        boolean isFirstClause = true;
        for (int i = 0; i < lstSizeInputTables; i++) {
            ExternalDbMapTable inputTable = inputTables.get(i);
            if (buildConditions(component, sbWhere, inputTable, false, isFirstClause)) {
                isFirstClause = false;
            }
        }
        sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
        IJoinType previousJoinType = null;
        for (int i = 0; i < lstSizeInputTables; i++) {
            ExternalDbMapTable inputTable = inputTables.get(i);
            IJoinType joinType = null;
            if (i == 0) {
                joinType = AbstractDbLanguage.JOIN.NO_JOIN;
            } else {
                joinType = language.getJoin(inputTable.getJoinType());
            }
            boolean commaCouldBeAdded = !explicitJoin && i > 0;
            boolean crCouldBeAdded = false;
            if (language.unuseWithExplicitJoin().contains(joinType) && !explicitJoin) {
                buildTableDeclaration(component, sb, inputTable, commaCouldBeAdded, crCouldBeAdded, false);
            } else if (!language.unuseWithExplicitJoin().contains(joinType) && explicitJoin) {
                if (i > 0) {
                    if (previousJoinType == null) {
                        buildTableDeclaration(component, sb, inputTables.get(i - 1), commaCouldBeAdded, crCouldBeAdded, true);
                        previousJoinType = joinType;
                    } else {
                        sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
                    }
                    sb.append(DbMapSqlConstants.SPACE);
                }
                String labelJoinType = joinType.getLabel();
                sb.append(labelJoinType);
                sb.append(DbMapSqlConstants.SPACE);
                if (joinType == AbstractDbLanguage.JOIN.CROSS_JOIN) {
                    ExternalDbMapTable nextTable = null;
                    if (i < lstSizeInputTables) {
                        nextTable = inputTables.get(i);
                        buildTableDeclaration(component, sb, nextTable, false, false, true);
                    }
                } else {
                    // ExternalDbMapTable rightTable = joinLeftToJoinRightTables.get(inputTable.getName());
                    buildTableDeclaration(component, sb, inputTable, false, false, true);
                    // if (rightTable != null) {
                    // } else {
                    // sb.append(" <!! NO JOIN CLAUSES FOR '" + inputTable.getName() + "' !!> ");
                    // }
                    sb.append(DbMapSqlConstants.SPACE);
                    sb.append(DbMapSqlConstants.ON);
                    sb.append(DbMapSqlConstants.LEFT_BRACKET);
                    sb.append(DbMapSqlConstants.SPACE);
                    if (!buildConditions(component, sb, inputTable, true, true)) {
                        sb.append(DbMapSqlConstants.LEFT_COMMENT);
                        sb.append(DbMapSqlConstants.SPACE);
                        //$NON-NLS-1$
                        sb.append(Messages.getString("DbGenerationManager.conditionNotSet"));
                        sb.append(DbMapSqlConstants.SPACE);
                        sb.append(DbMapSqlConstants.RIGHT_COMMENT);
                    }
                    sb.append(DbMapSqlConstants.SPACE);
                    sb.append(DbMapSqlConstants.RIGHT_BRACKET);
                }
            }
        }
        /*
             * for addition conditions
             */
        // like as input.newcolumn1>100
        List<String> whereAddition = new ArrayList<String>();
        // olny pure start with group or order, like as order/group by input.newcolumn1
        // List<String> byAddition = new ArrayList<String>();
        // like as input.newcolumn1>100 group/oder by input.newcolumn1
        // List<String> containWhereAddition = new ArrayList<String>();
        // like as "OR/AND input.newcolumn1", will keep original
        List<String> originalWhereAddition = new ArrayList<String>();
        List<String> otherAddition = new ArrayList<String>();
        if (outputTable != null) {
            List<ExternalDbMapEntry> customWhereConditionsEntries = outputTable.getCustomWhereConditionsEntries();
            if (customWhereConditionsEntries != null) {
                for (ExternalDbMapEntry entry : customWhereConditionsEntries) {
                    String exp = initExpression(component, entry);
                    if (exp != null && !DbMapSqlConstants.EMPTY.equals(exp.trim())) {
                        // } else
                        if (containWith(exp, DbMapSqlConstants.OR, true) || containWith(exp, DbMapSqlConstants.AND, true)) {
                            originalWhereAddition.add(exp);
                        } else {
                            whereAddition.add(exp);
                        }
                    }
                }
            }
            List<ExternalDbMapEntry> customOtherConditionsEntries = outputTable.getCustomOtherConditionsEntries();
            if (customOtherConditionsEntries != null) {
                for (ExternalDbMapEntry entry : customOtherConditionsEntries) {
                    String exp = initExpression(component, entry);
                    if (exp != null && !DbMapSqlConstants.EMPTY.equals(exp.trim())) {
                        otherAddition.add(exp);
                    }
                }
            }
        }
        String whereClauses = sbWhere.toString();
        boolean whereFlag = whereClauses.trim().length() > 0;
        boolean whereAddFlag = !whereAddition.isEmpty();
        boolean whereOriginalFlag = !originalWhereAddition.isEmpty();
        if (whereFlag || whereAddFlag || whereOriginalFlag) {
            sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
            sb.append(DbMapSqlConstants.WHERE);
        }
        if (whereFlag) {
            sb.append(whereClauses);
        }
        if (whereAddFlag) {
            for (int i = 0; i < whereAddition.size(); i++) {
                if (i == 0 && whereFlag || i > 0) {
                    sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
                    sb.append(DbMapSqlConstants.SPACE);
                    sb.append(DbMapSqlConstants.AND);
                }
                sb.append(DbMapSqlConstants.SPACE);
                sb.append(whereAddition.get(i));
            }
        }
        if (whereOriginalFlag) {
            for (String s : originalWhereAddition) {
                sb.append(DbMapSqlConstants.NEW_LINE);
                sb.append(DbMapSqlConstants.SPACE);
                sb.append(s);
            }
        }
        if (!otherAddition.isEmpty()) {
            sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
            for (String s : otherAddition) {
                sb.append(s);
                sb.append(DbMapSqlConstants.NEW_LINE).append(tabSpaceString);
            }
        }
    }
    String sqlQuery = sb.toString();
    if (DEFAULT_TAB_SPACE_STRING.equals(tabSpaceString)) {
        List<String> contextList = getContextList(component);
        boolean haveReplace = false;
        for (String context : contextList) {
            if (sqlQuery.contains(context)) {
                //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
                sqlQuery = sqlQuery.replaceAll("\\b" + context + "\\b", "\" +" + context + "+ \"");
                haveReplace = true;
            }
            if (queryColumnsName.contains(context)) {
                //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
                queryColumnsName = queryColumnsName.replaceAll("\\b" + context + "\\b", "\" +" + context + "+ \"");
            }
        }
        if (!haveReplace) {
            List<String> connContextList = getConnectionContextList(component);
            for (String context : connContextList) {
                if (sqlQuery.contains(context)) {
                    //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
                    sqlQuery = sqlQuery.replaceAll("\\b" + context + "\\b", "\" +" + context + "+ \"");
                }
                if (queryColumnsName.contains(context)) {
                    //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
                    queryColumnsName = queryColumnsName.replaceAll("\\b" + context + "\\b", "\" +" + context + "+ \"");
                }
            }
        }
    }
    sqlQuery = handleQuery(sqlQuery);
    queryColumnsName = handleQuery(queryColumnsName);
    return sqlQuery;
}