Package nz.org.riskscape.engine.output

Class StructFlattener

java.lang.Object

nz.org.riskscape.engine.output.StructFlattener

public class StructFlattener
extends Object

Flattens nested Structs to allow them to be written to data sources that don't support nested data structures.

Note that a flattener should be used once per struct, as they track which columns have already been used.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StructFlattener.CaseInsensitiveNamer	A StructFlattener.Namer that wraps another Namer and ensures uniqueness using case-insensitive comparison.
static class	StructFlattener.DotSeparatedNamer	Namer that produces a name that is taken from Struct.StructMember.getKey() for each segment and separated by a '.'.
static class	StructFlattener.LastMemberNamer	A StructFlattener.Namer that will use the Struct.StructMember.getKey() from the last segment as the name.
static interface	StructFlattener.Namer	A Namer can provide a name for the given segments.
static class	StructFlattener.StructMapping	A mapping from a possibly nested struct member to a flattened member.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	SEPARATOR

Constructor Summary

Constructors

Constructor	Description
StructFlattener()

Method Summary

Modifier and Type	Method	Description
List<StructFlattener.StructMapping>	flatten(nz.org.riskscape.engine.types.Struct struct)
List<StructFlattener.StructMapping>	flatten(nz.org.riskscape.engine.types.Struct struct, StructFlattener.Namer namer)
void	shortenIfNecessary(List<StructFlattener.StructMapping> mappings, int maxLength)	Deprecated. Ideally use a StructFlattener.Namer that does this itself.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SEPARATOR

public static final String SEPARATOR

See Also:

• Constant Field Values

Constructor Details

StructFlattener

public StructFlattener()

Method Details

flatten

public List<StructFlattener.StructMapping> flatten(nz.org.riskscape.engine.types.Struct struct)

flatten

public List<StructFlattener.StructMapping> flatten(nz.org.riskscape.engine.types.Struct struct,
 StructFlattener.Namer namer)

shortenIfNecessary

@Deprecated
public void shortenIfNecessary(List<StructFlattener.StructMapping> mappings,
 int maxLength)

Deprecated.

Ideally use a StructFlattener.Namer that does this itself. This method is only retained for use by ShapefileWriter V1.

Shorten StructFlattener.StructMapping.key if it is longer than maxLength.