Package com.google.gerrit.index

Class Schema<T>

java.lang.Object

com.google.gerrit.index.Schema<T>

public class Schema<T>
extends Object

Specific version of a secondary index schema.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Schema.Builder<T>
static class	Schema.Values<T>

Method Summary

Modifier and Type	Method	Description
Iterable<Schema.Values<T>>	buildFields(T obj, com.google.common.collect.ImmutableSet<String> skipFields)	Build all fields in the schema from an input object.
Optional<SchemaFieldDefs.SchemaField<T,?>>	getField(SchemaFieldDefs.SchemaField<T,?> first, SchemaFieldDefs.SchemaField<T,?>... rest)	Look up fields in this schema.
com.google.common.collect.ImmutableMap<String,IndexedField<T,?>>	getIndexFields()
SchemaFieldDefs.SchemaField<T,?>	getSchemaField(String fieldName)
com.google.common.collect.ImmutableMap<String,SchemaFieldDefs.SchemaField<T,?>>	getSchemaFields()	Get all fields in this schema.
com.google.common.collect.ImmutableSet<String>	getStoredFields()	Returns all fields in this schema where FieldDef.isStored() is true.
int	getVersion()
boolean	hasField(SchemaFieldDefs.SchemaField<T,?> field)	Check whether a field is present in this schema.
boolean	hasField(String fieldName)
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getVersion

public final int getVersion()

getSchemaFields

public final com.google.common.collect.ImmutableMap<String,SchemaFieldDefs.SchemaField<T,?>> getSchemaFields()

Get all fields in this schema.

This is primarily useful for iteration. Most callers should prefer one of the helper methods getField(SchemaField, SchemaField...) or hasField(SchemaField) to looking up fields by name

Returns:

all fields in this schema indexed by name.

getIndexFields

public final com.google.common.collect.ImmutableMap<String,IndexedField<T,?>> getIndexFields()

getStoredFields

public final com.google.common.collect.ImmutableSet<String> getStoredFields()

Returns all fields in this schema where FieldDef.isStored() is true.

getField

@SafeVarargs
public final Optional<SchemaFieldDefs.SchemaField<T,?>> getField(SchemaFieldDefs.SchemaField<T,?> first,
                                                                       SchemaFieldDefs.SchemaField<T,?>... rest)

Look up fields in this schema.

Parameters:

first - the preferred field to look up.

rest - additional fields to look up.

Returns:

the first field in the schema matching first or rest, in order, or absent if no field matches.

hasField

public final boolean hasField(SchemaFieldDefs.SchemaField<T,?> field)

Check whether a field is present in this schema.

Parameters:

field - field to look up.

Returns:

whether the field is present.

hasField

public final boolean hasField(String fieldName)

getSchemaField

public SchemaFieldDefs.SchemaField<T,?> getSchemaField(String fieldName)

buildFields

public final Iterable<Schema.Values<T>> buildFields(T obj,
                                                    com.google.common.collect.ImmutableSet<String> skipFields)

Build all fields in the schema from an input object.

Null values are omitted, as are fields which cause errors, which are logged.

Parameters:

obj - input object.

skipFields - set of field names to skip when indexing the document

Returns:

all non-null field values from the object.

toString

public String toString()

Overrides:

toString in class Object