示例#1
0
  @Override
  public String check(int fieldId, Value value) throws DriverException {
    // In order to build pk indexes
    initializeEdition();
    // Check special case of auto-increment not-null fields
    Type type = getMetadata().getFieldType(fieldId);
    boolean autoIncrement = type.getBooleanConstraint(Constraint.AUTO_INCREMENT);
    if (autoIncrement && type.getBooleanConstraint(Constraint.NOT_NULL) && value.isNull()) {
      return null;
    }
    int fieldType = type.getTypeCode();
    // Test geometry types.
    if (TypeFactory.isVectorial(type.getTypeCode())) {
      int valueType = value.getType();

      if (!checkGeometry(valueType, fieldType)) {
        return "Can't put a "
            + TypeFactory.getTypeName(valueType)
            + " in a "
            + TypeFactory.getTypeName(fieldType)
            + " column.";
      }
    }
    // Cast value
    Value val = castValue(type, value);
    int broadType = TypeFactory.getBroaderType(fieldType, val.getType());
    if (val.getType() != broadType
        && val.getType() != Type.NULL
        && !checkGeometry(val.getType(), fieldType)
        && fieldType != Type.STRING) {
      return "Can't cast a "
          + TypeFactory.getTypeName(value.getType())
          + " to a "
          + TypeFactory.getTypeName(fieldType);
    }

    // Check constraints
    String fieldName = getMetadata().getFieldName(fieldId);
    String error = type.check(value);
    if (error != null) {
      return "Value at field " + getFieldName(fieldId) + " is not valid:" + error;
    }

    // Check uniqueness
    if (type.getBooleanConstraint(Constraint.UNIQUE) || type.getBooleanConstraint(Constraint.PK)) {
      // We assume a geometry field can't have unique constraint
      IndexQuery iq = new DefaultAlphaQuery(fieldName, value);
      Iterator<Integer> it = queryIndex(iq);
      while (it.hasNext()) {
        if (getFieldValue(it.next(), fieldId).equals(value).getAsBoolean()) {
          return fieldName + " column doesn't admit duplicates: " + value;
        }
      }
    }

    return null;
  }
示例#2
0
  private void initializeEdition() throws DriverException {
    if (!initialized) {
      long rowCount = getDataSource().getRowCount();

      // build alpha indexes on unique fields
      Metadata m = getMetadata();
      for (int i = 0; i < m.getFieldCount(); i++) {
        Type type = m.getFieldType(i);
        if (type.getBooleanConstraint(Constraint.UNIQUE)
            || type.getBooleanConstraint(Constraint.PK)) {
          IndexManager indexManager = getDataSourceFactory().getIndexManager();
          try {
            if (!indexManager.isIndexed(getName(), m.getFieldName(i))) {
              indexManager.buildIndex(getName(), m.getFieldName(i), new NullProgressMonitor());
            }
          } catch (NoSuchTableException e) {
            throw new DriverException("table not found: " + getName(), e);
          } catch (IndexException e) {
            throw new DriverException("Cannot create index on unique fields", e);
          }
        }
      }

      // initialize directions
      rowsAddresses = new ArrayList<PhysicalRowAddress>();
      for (int i = 0; i < rowCount; i++) {
        PhysicalRowAddress dir = new OriginalRowAddress(getDataSource(), i);
        rowsAddresses.add(dir);
        editionActions.add(new NoEditionInfo(getPK(i), i));
      }

      Number[] xScope = getDataSource().getScope(DataSet.X);
      Number[] yScope = getDataSource().getScope(DataSet.Y);
      if ((xScope != null) && (yScope != null)) {
        cachedScope =
            new Envelope(
                new Coordinate(xScope[0].doubleValue(), yScope[0].doubleValue()),
                new Coordinate(xScope[1].doubleValue(), yScope[1].doubleValue()));
      } else {
        cachedScope = null;
      }

      initialized = true;
    }
  }