@Override
protected synchronized Record getNext() throws NoSuchElementException {
final FileGdbRecordStore recordStore = this.recordStore;
final FileGdbEnumRowsIterator rows = this.rows;
if (rows == null || this.closed) {
throw new NoSuchElementException();
} else {
Row row = null;
while (this.offset > 0 && this.count < this.offset) {
row = rows.next();
this.count++;
if (this.closed) {
throw new NoSuchElementException();
}
}
if (this.count - this.offset >= this.limit) {
throw new NoSuchElementException();
}
row = rows.next();
this.count++;
try {
final Record record = this.recordFactory.newRecord(this.recordDefinition);
if (this.labelCountMap == null) {
recordStore.addStatistic("query", record);
} else {
this.labelCountMap.addCount(record);
}
record.setState(RecordState.INITIALIZING);
for (final FieldDefinition field : this.recordDefinition.getFields()) {
final String name = field.getName();
final AbstractFileGdbFieldDefinition esriFieldDefinition =
(AbstractFileGdbFieldDefinition) field;
final Object value = esriFieldDefinition.getValue(row);
record.setValue(name, value);
if (this.closed) {
throw new NoSuchElementException();
}
}
record.setState(RecordState.PERSISTED);
if (this.closed) {
throw new NoSuchElementException();
}
return record;
} finally {
row.delete();
}
}
}
public static void write(
final File file, final RecordDefinition recordDefinition, final String dataSource)
throws IOException {
try (XmlWriter writer = new XmlWriter(new FileWriter(file))) {
writer.setIndent(true);
writer.startDocument("UTF-8", "1.0");
writer.startTag("OGRVRTDataSource");
writer.startTag("OGRVRTLayer");
final String typeName = recordDefinition.getName();
writer.attribute("name", typeName);
writer.startTag("SrcDataSource");
writer.attribute("relativeToVRT", "1");
writer.text(dataSource);
writer.endTag("SrcDataSource");
writer.element(new QName("SrcLayer"), typeName);
for (final FieldDefinition attribute : recordDefinition.getFields()) {
final String fieldName = attribute.getName();
final DataType fieldType = attribute.getDataType();
final Class<?> typeClass = attribute.getTypeClass();
if (Geometry.class.isAssignableFrom(typeClass)) {
final GeometryFactory geometryFactory = recordDefinition.getGeometryFactory();
writer.element("GeometryType", "wkb" + fieldType);
if (geometryFactory != null) {
writer.element("LayerSRS", "EPSG:" + geometryFactory.getCoordinateSystemId());
}
writer.startTag("GeometryField");
writer.attribute("encoding", "WKT");
writer.attribute("field", fieldName);
writer.attribute("name", fieldName);
writer.attribute("reportSrcColumn", "FALSE");
writer.element("GeometryType", "wkb" + fieldType);
if (geometryFactory != null) {
writer.element("SRS", "EPSG:" + geometryFactory.getCoordinateSystemId());
}
writer.endTag("GeometryField");
} else {
writer.startTag("Field");
writer.attribute("name", fieldName);
String type = "String";
if (Arrays.asList(
DataTypes.BYTE, DataTypes.SHORT, DataTypes.INT, DataTypes.LONG, DataTypes.INTEGER)
.contains(fieldType)) {
type = "Integer";
} else if (Arrays.asList(DataTypes.FLOAT, DataTypes.DOUBLE, DataTypes.DECIMAL)
.contains(fieldType)) {
type = "Real";
} else if (DataTypes.DATE.equals(type)) {
type = "Date";
} else if (DataTypes.DATE_TIME.equals(type)) {
type = "DateTime";
} else {
type = "String";
}
writer.attribute("type", type);
final int length = attribute.getLength();
if (length > 0) {
writer.attribute("width", length);
}
final int scale = attribute.getScale();
if (scale > 0) {
writer.attribute("scale", scale);
}
writer.attribute("src", fieldName);
writer.endTag("Field");
}
}
writer.endTag("OGRVRTLayer");
writer.endTag("OGRVRTDataSource");
writer.endDocument();
}
}