package projections
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Type Members
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abstract
class
FieldEnumeration extends Enumeration
Abstract class that all record-specific enumerations extend.
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trait
FieldValue extends AnyRef
The FieldValue trait (and its sister abstract class, FieldEnumeration) are meant to help clean up the use of Projection when dealing with field enumeration classes like ADAMRecordField.
The FieldValue trait (and its sister abstract class, FieldEnumeration) are meant to help clean up the use of Projection when dealing with field enumeration classes like ADAMRecordField.
Projection is a class for turning fields from an Enumeration into a projected Avro Schema object.
In the old way of doing this, we used a "normal" Enumeration. Projection would receive a collection of Read.Value objects, and use their names (plus the Read.SCHEMA$ static field) to turn them into a Schema for ADAMRecords. This worked fine for Read, and not at all for generalizing to other Schemas over other field enumerations.
In the new system, we embed the Avro Schema object as an argument *in* each enumeration Value. We do this in two steps: (1) instead of ADAMRecordField (e.g.) extending Enumeration, it extends FieldEnumeration and provides the appropriate (static) Schema object as an argument. (2) instead of using the (final, non-overrideable) Value method within Enumeration to provide each enum value, it calls FieldEnumeration.SchemaValue instead, which embeds the corresponding Schema in each value.
Finally, Projection will extract the Schema value from the first FieldValue that is given to it and produce the corresponding (projected) Schema.
This means, of course, that Projection can't handle empty field lists -- but that was always going to be an error-filled edge-case anyway (why would you want to project to zero fields?)
Value Members
- object AlignmentField extends FieldEnumeration
- object DbxrefField extends FieldEnumeration
- object FeatureField extends FieldEnumeration
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object
Filter
Helper object to create a projection that excludes fields from a schema.
- object FragmentField extends FieldEnumeration
- object GenotypeField extends FieldEnumeration
- object OntologyTermField extends FieldEnumeration
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object
Projection
Avro utility object to create a projection of a Schema.
- object ReadField extends FieldEnumeration
- object ReadGroupField extends FieldEnumeration
- object ReferenceField extends FieldEnumeration
- object SampleField extends FieldEnumeration
- object SequenceField extends FieldEnumeration
- object SliceField extends FieldEnumeration
- object TranscriptEffectField extends FieldEnumeration
- object VariantAnnotationField extends FieldEnumeration
- object VariantCallingAnnotationsField extends FieldEnumeration
- object VariantField extends FieldEnumeration