Examples of org.apache.commons.lang3.text.StrBuilder$StrBuilderReader

org.apache.commons.lang3.text.StrBuilder
Inner class to allow StrBuilder to operate as a writer.

        int limit = 2;
        int offset = 3;


        // Only offset, default limit.
        query.setRowOffset(offset);
        StrBuilder queryStringBuilder = new StrBuilder();
        SqlDataSourceHelper.appendLimitAndOffsetClause(query, queryStringBuilder);
        assertEquals(" OFFSET " + offset, queryStringBuilder.toString());


        // Both limit and offset.
        query.setRowLimit(limit);
        queryStringBuilder.delete(0, queryStringBuilder.length());
        SqlDataSourceHelper.appendLimitAndOffsetClause(query, queryStringBuilder);
        assertEquals("LIMIT " + limit + " OFFSET " + offset,
                queryStringBuilder.toString());


        // Only limit.
        query = new Query();
        queryStringBuilder.delete(0, queryStringBuilder.length());
        query.setRowLimit(limit);
        SqlDataSourceHelper.appendLimitAndOffsetClause(query, queryStringBuilder);
        assertEquals("LIMIT " + limit, queryStringBuilder.toString());


        // No limit and no offset.
        query = new Query();
        queryStringBuilder.delete(0, queryStringBuilder.length());
        SqlDataSourceHelper.appendLimitAndOffsetClause(query, queryStringBuilder);
        assertEquals("", queryStringBuilder.toString());
    }

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        }
        if(description != null) {
            objectParts.add("\"detailed_message\":\"" + EscapeUtil.jsonEscape(description)
                    + "\"");
        }
        return new StrBuilder("{").appendWithSeparators(objectParts, ",").append("}").toString();
    }

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        return new StrBuilder("{").appendWithSeparators(objectParts, ",").append("}").toString();
    }


    @Override
    public CharSequence error(final DataSourceRequest request, final ResponseStatus status) {
        StrBuilder sb = new StrBuilder();
        sb.append("{\"version\":\"0.6\"");


        final DataSourceParameters dsParams = request.getDataSourceParameters();
        // If no reqId found in the request, do not return reqId in the response.
        String requestId = dsParams.getRequestId();
        if(requestId != null) {
            sb.append(",\"reqId\":\"").append(EscapeUtil.jsonEscape(requestId)).append("\"");
        }
        // Check signature.
        String previousSignature = dsParams.getSignature();
        StatusType statusType = status.getStatusType();
        sb.append(",\"status\":\"").append(statusType.lowerCaseString()).append("\"");
        // Status is error.
        sb.append(",\"errors\":[");
        sb.append(getFaultString(status.getReasonType(), status.getDescription()));
        sb.append("]");
        sb.append("}");
        return sb.toString();
    }

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    }




    @Override
    public CharSequence render(final DataSourceRequest request, final DataTable data) {
        StrBuilder sb = new StrBuilder();
        sb.append("{\"version\":\"0.6\"");
        // If no reqId found in the request, do not return reqId in the response.
        String requestId = request.getDataSourceParameters().getRequestId();
        if(requestId != null) {
            sb.append(",\"reqId\":\"").append(EscapeUtil.jsonEscape(requestId)).append("\"");
        }
        ResponseStatus responseStatus = null;
        if(!data.getWarnings().isEmpty()) {
            responseStatus = new ResponseStatus(StatusType.WARNING);
        }
        if(responseStatus == null) {
            // Check signature.
            final String previousSignature = request.getDataSourceParameters().getSignature();
            if(!StringUtils.isEmpty(previousSignature) && (this.getSignature(data).equals(previousSignature))) {
                responseStatus = new ResponseStatus(StatusType.ERROR, ReasonType.NOT_MODIFIED, null);
            }
            else {
                responseStatus = new ResponseStatus(StatusType.OK, null, null);
            }
        }
        StatusType statusType = responseStatus.getStatusType();
        sb.append(",\"status\":\"").append(statusType.lowerCaseString()).append("\"");
        // There are reason and messages if the status is WARNING/ERROR.
        if(statusType != StatusType.OK) {
            // Status is warning or error.
            if(statusType == StatusType.WARNING) {
                List<Warning> warnings = data.getWarnings();
                List<String> warningJsonStrings = Lists.newArrayList();
                if(warnings != null) {
                    for(Warning warning : warnings) {
                        warningJsonStrings.add(getFaultString(warning.getReasonType(), warning.getMessage()));
                    }
                }
                sb.append(",\"warnings\":[").appendWithSeparators(warningJsonStrings, ",").append("]");


            }
            else { // Status is error.
                sb.append(",\"errors\":[");
                sb.append(getFaultString(responseStatus.getReasonType(), responseStatus.getDescription()));
                sb.append("]");
            }
        }


        if((statusType != StatusType.ERROR)) {
            // MessageType OK or WARNING,
            // so need to attach a data table (and a signature).
            sb.append(",\"sig\":\"").append(this.getSignature(data)).append("\"");
            sb.append(",\"table\":").append(this.renderDataTable(data, true, true));
        }
        sb.append("}");
        return sb.toString();
    }

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            for(Map.Entry<String, String> entry : propertiesMap.entrySet()) {
                customPropertiesStrings.add("\""
                        + EscapeUtil.jsonEscape(entry.getKey()) + "\":\""
                        + EscapeUtil.jsonEscape(entry.getValue()) + "\"");
            }
            customPropertiesString = new StrBuilder("{")
                    .appendWithSeparators(customPropertiesStrings, ",").append("}").toString();
        }
        return customPropertiesString;
    }

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        for(QueryFilter filter : subFilters) {
            subFilterStrings.add("(" + filter.toQueryString() + ")");
        }
        // This works because the names in LogicalOperator are exactly the same as
        // in the query language.
        return new StrBuilder()
                .appendWithSeparators(subFilterStrings, " " + operator.name() + " ").toString();
    }

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     * The string returned does not contain the LABEL keyword.
     *
     * @return The query string.
     */
    public String toQueryString() {
        StrBuilder builder = new StrBuilder();
        List<String> stringList = Lists.newArrayList();
        for(AbstractColumn col : columnLabels.keySet()) {
            String label = columnLabels.get(col);
            stringList.add(col.toQueryString() + " " + Query.stringToQueryStringLiteral(label));
        }
        builder.appendWithSeparators(stringList, ", ");
        return builder.toString();
    }

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            throws DataSourceException {
        Connection con = getDatabaseConnection(databaseDescription);
        String tableName = databaseDescription.getTableName();


        // Build the sql query.
        StrBuilder queryStringBuilder = new StrBuilder();
        buildSqlQuery(query, queryStringBuilder, tableName);
        List<String> columnIdsList = null;
        if(query.hasSelection()) {
            columnIdsList = getColumnIdsList(query.getSelection());
        }
        Statement stmt = null;
        try {
            // Execute the sql query.
            stmt = con.createStatement();
            ResultSet rs = stmt.executeQuery(queryStringBuilder.toString());


            DataTable table = buildColumns(rs, columnIdsList);


            // Fill the data in the data table.
            buildRows(table, rs);

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     *
     * @param queryFilter The query filter.
     * @return The sql query WHERE clause as a StrBuilder.
     */
    private static StrBuilder buildWhereClauseRecursively(QueryFilter queryFilter) {
        StrBuilder whereClause = new StrBuilder();


        // Base case of the recursion: the filter is not a compound filter.
        if(queryFilter instanceof ColumnIsNullFilter) {
            buildWhereClauseForIsNullFilter(whereClause, queryFilter);
        }
        else if(queryFilter instanceof ComparisonFilter) {
            buildWhereCluaseForComparisonFilter(whereClause, queryFilter);
        }
        else if(queryFilter instanceof NegationFilter) {
            whereClause.append("(NOT ");
            whereClause.append(buildWhereClauseRecursively(
                    ((NegationFilter) queryFilter).getSubFilter()));
            whereClause.append(")");
        }
        else {
            // queryFilter is a CompoundFilter.
            CompoundFilter compoundFilter = (CompoundFilter) queryFilter;


            int numberOfSubFilters = compoundFilter.getSubFilters().size();


            // If the compound filter is empty, build a where clause according to the
            // logical operator: nothing AND nothing -> WHERE "true", nothing OR
            // nothing -> WHERE "false" (match the query language rules).
            if(numberOfSubFilters == 0) {
                if(compoundFilter.getOperator() == CompoundFilter.LogicalOperator.AND) {
                    whereClause.append("true");
                }
                else {// OR
                    whereClause.append("false");
                }
            }
            else {
                List<String> filterComponents = Lists.newArrayList();
                for(QueryFilter filter : compoundFilter.getSubFilters()) {
                    filterComponents.add(buildWhereClauseRecursively(filter).toString());
                }
                String logicalOperator = getSqlLogicalOperator(compoundFilter.getOperator());
                whereClause.append("(").appendWithSeparators(filterComponents, " " + logicalOperator + " ")
                        .append(")");
            }
        }
        return whereClause;
    }

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     * @param whereClause A string builder representing the WHERE clause of the SQL query.
     * @param queryFilter The query filter.
     */
    private static void buildWhereCluaseForComparisonFilter(
            StrBuilder whereClause, QueryFilter queryFilter) {
        StrBuilder first = new StrBuilder();
        StrBuilder second = new StrBuilder();


        // Build the left part and the right part of the clause according to the filter's type.
        if(queryFilter instanceof ColumnColumnFilter) {
            ColumnColumnFilter filter = (ColumnColumnFilter) queryFilter;
            first.append(getColumnId(filter.getFirstColumn()));
            second.append(getColumnId(filter.getSecondColumn()));
        }
        else { // The filter is a ColumnValueFilter
            ColumnValueFilter filter = (ColumnValueFilter) queryFilter;
            first.append(getColumnId(filter.getColumn()));
            second.append(filter.getValue().toString());
            if((filter.getValue().getType() == ValueType.TEXT)
                    || (filter.getValue().getType() == ValueType.DATE)
                    || (filter.getValue().getType() == ValueType.DATETIME)
                    || (filter.getValue().getType() == ValueType.TIMEOFDAY)) {
                second.insert(0, "\"");
                second.insert(second.length(), "\"");
            }
        }
        whereClause.append(buildWhereClauseFromRightAndLeftParts(
                first, second, ((ComparisonFilter) queryFilter).getOperator()));
    }

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