Examples of StrBuilder

The aim has been to provide an API that mimics very closely what StringBuffer provides, but with additional methods. It should be noted that some edge cases, with invalid indices or null input, have been altered - see individual methods. The biggest of these changes is that by default, null will not output the text 'null'. This can be controlled by a property, {@link #setNullText(String)}.

Prior to 3.0, this class implemented Cloneable but did not implement the clone method so could not be used. From 3.0 onwards it no longer implements the interface. @since 2.2 @version $Id: StrBuilder.java 1153484 2011-08-03 13:39:42Z ggregory $

Examples of org.apache.commons.lang.text.StrBuilder

   * @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;
  }

Examples of org.apache.commons.lang.text.StrBuilder

   * @param l The list of columns.
   * 
   * @return A comma separated string of the query strings of the given columns.
   */
  /* package */ static String columnListToQueryString(List<AbstractColumn> l) {
    StrBuilder builder = new StrBuilder();
    List<String> stringList = Lists.newArrayList();
    for (AbstractColumn col : l) {
      stringList.add(col.toQueryString());
    }
    builder.appendWithSeparators(stringList, ", ");
    return builder.toString();
  }

Examples of org.apache.commons.lang.text.StrBuilder

   * @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()));
  }

Examples of org.apache.commons.lang.text.StrBuilder

      clauses.add("FORMAT " + userFormatOptions.toQueryString());
    }
    if (hasOptions()) {
      clauses.add("OPTIONS " + options.toQueryString());
    }
    StrBuilder result = new StrBuilder();
    result.appendWithSeparators(clauses, " ");
    return result.toString();
  }

Examples of org.apache.commons.lang.text.StrBuilder

   *
   * @return A string builder representing the where clause of the SQL query.
   */
  private static StrBuilder buildWhereClauseFromRightAndLeftParts(
      StrBuilder value1, StrBuilder value2, ComparisonFilter.Operator operator) {
    StrBuilder clause;
    switch (operator) {
      case EQ:
        clause = value1.append("=").append(value2);
        break;
      case NE:
        clause = value1.append("<>").append(value2);
        break;
      case LT:
        clause = value1.append("<").append(value2);
        break;
      case GT:
        clause = value1.append(">").append(value2);
        break;
      case LE:
        clause = value1.append("<=").append(value2);
        break;
      case GE:
        clause = value1.append(">=").append(value2);
        break;
      case CONTAINS:
        value2 = new StrBuilder(value2.toString().replace("\"", ""));
        clause = value1.append(" LIKE ").append("\"%").append(value2).append("%\"");
        break;
      case STARTS_WITH:
        value2 = new StrBuilder(value2.toString().replace("\"", ""));
        clause = value1.append(" LIKE ").append("\"").append(value2).append("%\"");
        break;
      case ENDS_WITH:
        value2 = new StrBuilder(value2.toString().replace("\"", ""));
        clause = value1.append(" LIKE ").append("\"%").append(value2).append("\"");
        break;
      case MATCHES:
        throw new RuntimeException("SQL does not support regular expression");
      case LIKE:
        value2 = new StrBuilder(value2.toString().replace("\"", ""));
        clause = value1.append(" LIKE ").append("\"").append(value2).append("\"");
        break;
      default:// Should never get here.
        throw new RuntimeException("Operator was not found: " + operator);
    }
    clause.insert(0, "(").append(")");
    return clause;
  }

Examples of org.apache.commons.lang.text.StrBuilder

   * @param abstractColumn The column.
   *
   * @return The column id for the data table.
   */
  private static StrBuilder getColumnId(AbstractColumn abstractColumn) {
    StrBuilder columnId = new StrBuilder();


    // For simple column the id is simply the column id.
    if (abstractColumn instanceof SimpleColumn) {
      columnId.append("`").append(abstractColumn.getId()).append("`");
    } else {
      // For aggregation column build the id from the aggregation type and the
      // column id (e.g. for aggregation type 'min' and column id 'salary', the
      // sql column id will be: min(`salary`);
      AggregationColumn aggregationColumn = (AggregationColumn) abstractColumn;
      columnId.append(getAggregationFunction(
          aggregationColumn.getAggregationType())).append("(`").
          append(aggregationColumn.getAggregatedColumn()).append("`)");
    }
    return columnId;
  }

Examples of org.apache.commons.lang.text.StrBuilder

            if (args == 0)
            {
                return method.getName();
            }


            StrBuilder methodKey = new StrBuilder((args+1)*16).append(method.getName());


            for (int j = 0; j < args; j++)
            {
                /*
                 * If the argument type is primitive then we want
                 * to convert our primitive type signature to the
                 * corresponding Object type so introspection for
                 * methods with primitive types will work correctly.
                 *
                 * The lookup map (convertPrimitives) contains all eight
                 * primitives (boolean, byte, char, double, float, int, long, short)
                 * known to Java. So it should never return null for the key passed in.
                 */
                if (parameterTypes[j].isPrimitive())
                {
                    methodKey.append((String) convertPrimitives.get(parameterTypes[j]));
                }
                else
                {
                    methodKey.append(parameterTypes[j].getName());
                }
            }


            return methodKey.toString();
        }

Examples of org.apache.commons.lang.text.StrBuilder

            if (args == 0)
            {
                return method;
            }


            StrBuilder methodKey = new StrBuilder((args+1)*16).append(method);


            for (int j = 0; j < args; j++)
            {
                Object arg = params[j];
                if (arg == null)
                {
                    methodKey.append(NULL_ARG);
                }
                else
                {
                    methodKey.append(arg.getClass().getName());
                }
            }


            return methodKey.toString();
        }

Examples of org.apache.commons.lang.text.StrBuilder

            getLog().error(msg);
            throw new VelocityException(msg);
        }


        /* now just create the VM call, and use evaluate */
        StrBuilder template = new StrBuilder("#");
        template.append(vmName);
        template.append("(");
        for( int i = 0; i < params.length; i++)
        {
            template.append(" $");
            template.append(params[i]);
        }
        template.append(" )");


        return evaluate(context, writer, logTag, template.toString());
    }

Examples of org.apache.commons.lang.text.StrBuilder

     *
     * @param ba input binary byte array
     * @return hex representation of binary input
     */
    public static String baToHexString(byte ba[]) {
        StrBuilder sb = new StrBuilder(ba.length*2);
        for (int i = 0; i < ba.length; i++) {
            int j = ba[i] & 0xff;
            if (j < 16) {
                sb.append("0"); // $NON-NLS-1$ add zero padding
            }
            sb.append(Integer.toHexString(j));
        }
        return sb.toString();
    }