ArcGIS Engine Developer Guide

BUILDING A COMMAND-LINE JAVA APPLICATION
the geometry type. Create new fields using the IFieldsEdit interface and return
this object.
try {
Fields fields = new Fields();
IFieldsEdit fieldsEdt = fields;
Field field = new Field();
IFieldEdit fieldEdt = field;
GeometryDef geometryDef = new GeometryDef();
double dGridSize;
if (spatialRef.hasXYPrecision()) {
double[] xmin = {0};
double[] ymin = {0};
double[] xmax = {0};
double[] ymax = {0};
spatialRef.getDomain(xmin, xmax, ymin, ymax);
double dArea = (xmax[0] - xmin[0]) * (ymax[0] - ymin[0]);
dGridSize = Math.sqrt(dArea / 100);
}else {
dGridSize = 1000;
}
geometryDef.setGeometryType(shapeType);
geometryDef.setHasM(hasM);
geometryDef.setHasZ(hasZ);
geometryDef.setSpatialReferenceByRef(spatialRef);
geometryDef.setGridCount(1);
geometryDef.setGridSize(0,dGridSize);
// Add oid field - must come before geometry field.
fieldEdt = new Field();
fieldEdt.setName("OBJECTID");
fieldEdt.setAliasName("OBJECTID");
fieldEdt.setType(esriFieldType.esriFieldTypeOID);
fieldsEdt.addField(fieldEdt);
// Add Geometry field.
fieldEdt = new Field();
fieldEdt.setName("SHAPE");
fieldEdt.setIsNullable(true);
fieldEdt.setType(esriFieldType.esriFieldTypeGeometry);
fieldEdt.setGeometryDefByRef(geometryDef);
fieldEdt.setRequired(true);
fieldsEdt.addField(fieldEdt);
return fieldsEdt;
}catch (IOException ex) {
ex.printStackTrace();
return null;
}
}
Chapter 6 • Developer scenarios • 421