public int getField(FlatBufferBuilder builder) {
int nameOffset = name == null ? -1 : builder.createString(name);
int typeOffset = type.getType(builder);
int[] childrenData = new int[children.size()];
for (int i = 0; i < children.size(); i++) {
childrenData[i] = children.get(i).getField(builder);
}
int childrenOffset = org.apache.arrow.flatbuf.Field.createChildrenVector(builder, childrenData);
int[] buffersData = new int[typeLayout.getVectors().size()];
for (int i = 0; i < buffersData.length; i++) {
VectorLayout vectorLayout = typeLayout.getVectors().get(i);
buffersData[i] = vectorLayout.writeTo(builder);
}
int layoutOffset = org.apache.arrow.flatbuf.Field.createLayoutVector(builder, buffersData);
org.apache.arrow.flatbuf.Field.startField(builder);
if (name != null) {
org.apache.arrow.flatbuf.Field.addName(builder, nameOffset);
}
org.apache.arrow.flatbuf.Field.addNullable(builder, nullable);
org.apache.arrow.flatbuf.Field.addTypeType(builder, type.getTypeID().getFlatbufID());
org.apache.arrow.flatbuf.Field.addType(builder, typeOffset);
org.apache.arrow.flatbuf.Field.addChildren(builder, childrenOffset);
org.apache.arrow.flatbuf.Field.addLayout(builder, layoutOffset);
return org.apache.arrow.flatbuf.Field.endField(builder);
}
public static Field convertField(org.apache.arrow.flatbuf.Field field) {
String name = field.name();
boolean nullable = field.nullable();
ArrowType type = getTypeForField(field);
ImmutableList.Builder<org.apache.arrow.vector.schema.VectorLayout> layout =
ImmutableList.builder();
for (int i = 0; i < field.layoutLength(); ++i) {
layout.add(new org.apache.arrow.vector.schema.VectorLayout(field.layout(i)));
}
ImmutableList.Builder<Field> childrenBuilder = ImmutableList.builder();
for (int i = 0; i < field.childrenLength(); i++) {
childrenBuilder.add(convertField(field.children(i)));
}
List<Field> children = childrenBuilder.build();
Field result = new Field(name, nullable, type, children, new TypeLayout(layout.build()));
return result;
}
