Examples with BLangSelectClause org.wso2.ballerinalang.compiler.tree.clauses.BLangSelectClause used on opensource projects

Example 1 with BLangSelectClause

use of org.wso2.ballerinalang.compiler.tree.clauses.BLangSelectClause in project ballerina by ballerina-lang.

the class SemanticAnalyzer method visit.

public void visit(BLangSelectClause selectClause) {
    GroupByNode groupByNode = selectClause.getGroupBy();
    if (groupByNode != null) {
        ((BLangGroupBy) groupByNode).accept(this);
    }
    HavingNode havingNode = selectClause.getHaving();
    if (havingNode != null) {
        ((BLangHaving) havingNode).accept(this);
    }
    List<? extends SelectExpressionNode> selectExpressionsList = selectClause.getSelectExpressions();
    if (selectExpressionsList != null) {
        for (SelectExpressionNode selectExpressionNode : selectExpressionsList) {
            ((BLangSelectExpression) selectExpressionNode).accept(this);
        }
    }
}

Example 2 with BLangSelectClause

use of org.wso2.ballerinalang.compiler.tree.clauses.BLangSelectClause in project ballerina by ballerina-lang.

the class SiddhiQueryBuilder method createSiddhiHavingClause.

private void createSiddhiHavingClause(BLangSelectClause select) {
    BLangHaving having = (BLangHaving) select.getHaving();
    having.accept(this);
}

Example 3 with BLangSelectClause

use of org.wso2.ballerinalang.compiler.tree.clauses.BLangSelectClause in project ballerina by ballerina-lang.

the class SiddhiQueryBuilder method createSiddhiSelectExpressionClause.

private void createSiddhiSelectExpressionClause(BLangSelectClause select) {
    List<? extends SelectExpressionNode> selectExprList = select.getSelectExpressions();
    selectExprClause = new StringBuilder();
    selectExprClause.append("select ");
    if (selectExprList != null && !selectExprList.isEmpty()) {
        Iterator<? extends SelectExpressionNode> iterator = selectExprList.iterator();
        BLangSelectExpression selectExpression = (BLangSelectExpression) iterator.next();
        selectExpression.accept(this);
        selectExprClause.append(selectExpr);
        while (iterator.hasNext()) {
            selectExpression = (BLangSelectExpression) iterator.next();
            selectExprClause.append(", ");
            selectExpression.accept(this);
            selectExprClause.append(selectExpr);
        }
    } else if (select.isSelectAll()) {
        selectExprClause.append("* ");
    }
}

Example 4 with BLangSelectClause

use of org.wso2.ballerinalang.compiler.tree.clauses.BLangSelectClause in project ballerina by ballerina-lang.

the class SiddhiQueryBuilder method visit.

@Override
public void visit(BLangStreamingQueryStatement streamingQueryStatement) {
    siddhiQuery.append("from ");
    StreamingInput streamingInput = streamingQueryStatement.getStreamingInput();
    if (streamingInput != null) {
        ((BLangStreamingInput) streamingInput).accept(this);
        siddhiQuery.append(" ").append(streamingInputClause);
    }
    PatternClause patternClause = streamingQueryStatement.getPatternClause();
    if (patternClause != null) {
        patternStreamingClause = new StringBuilder();
        ((BLangPatternClause) patternClause).accept(this);
        siddhiQuery.append(" ").append(patternStreamingClause);
    }
    JoinStreamingInput joinStreamingInput = streamingQueryStatement.getJoiningInput();
    if (joinStreamingInput != null) {
        ((BLangJoinStreamingInput) joinStreamingInput).accept(this);
        siddhiQuery.append(" ").append(joinStreamingInputClause);
    }
    SelectClauseNode selectClauseNode = streamingQueryStatement.getSelectClause();
    if (selectClauseNode != null) {
        ((BLangSelectClause) selectClauseNode).accept(this);
        siddhiQuery.append(" ").append(selectExprClause);
    }
    OrderByNode orderByNode = streamingQueryStatement.getOrderbyClause();
    if (orderByNode != null) {
        ((BLangOrderBy) orderByNode).accept(this);
        siddhiQuery.append(" ").append(orderByClause);
    }
    OutputRateLimitNode outputRateLimitNode = streamingQueryStatement.getOutputRateLimitNode();
    if (outputRateLimitNode != null) {
        ((BLangOutputRateLimit) outputRateLimitNode).accept(this);
        siddhiQuery.append(" ").append(outputRateLimitClause);
    }
    BLangStreamAction streamActionNode = (BLangStreamAction) streamingQueryStatement.getStreamingAction();
    if (streamActionNode != null) {
        streamActionNode.accept(this);
        siddhiQuery.append(" ").append(streamActionClause);
        siddhiQuery.append(" ; ");
    }
}

Example 5 with BLangSelectClause

use of org.wso2.ballerinalang.compiler.tree.clauses.BLangSelectClause in project ballerina by ballerina-lang.

the class SqlQueryBuilder method visit.

@Override
public void visit(BLangTableQuery tableQuery) {
    BLangSelectClause selectClause = (BLangSelectClause) tableQuery.getSelectClauseNode();
    BLangStreamingInput streamingInput = (BLangStreamingInput) tableQuery.getStreamingInput();
    BLangJoinStreamingInput joinStreamingInput = (BLangJoinStreamingInput) tableQuery.getJoinStreamingInput();
    BLangOrderBy orderBy = (BLangOrderBy) tableQuery.getOrderByNode();
    StringBuilder sqlTableQuery = new StringBuilder();
    /*Add each clause to the sqlQuery and add the params to TableQuery object*/
    addSelectClauseAndParams(tableQuery, selectClause, sqlTableQuery);
    addFromClauseAndParams(tableQuery, streamingInput, sqlTableQuery);
    addJoinClauseAndParams(tableQuery, joinStreamingInput, sqlTableQuery);
    addGroupByClause(selectClause, sqlTableQuery);
    addHavingClauseAndParams(tableQuery, selectClause, sqlTableQuery);
    addOrderByClause(orderBy, sqlTableQuery);
    tableQuery.setSqlQuery(sqlTableQuery.toString());
}