Class DocumentExtensions

LUCENENET specific extensions to the Document class.

Inheritance

System.Object

DocumentExtensions

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: Lucene.Net.Documents

Assembly: Lucene.Net.dll

Syntax

public static class DocumentExtensions

Methods

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AddBinaryDocValuesField(Document, String, BytesRef)

Adds a new BinaryDocValuesField.

Declaration

public static BinaryDocValuesField AddBinaryDocValuesField(this Document document, string name, BytesRef value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
BytesRef	value	binary content

Returns

Type	Description
BinaryDocValuesField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field name is null

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AddDoubleDocValuesField(Document, String, Double)

Adds a new DoubleDocValuesField field with the specified 64-bit double value

Declaration

public static DoubleDocValuesField AddDoubleDocValuesField(this Document document, string name, double value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Double	value	64-bit double value

Returns

Type	Description
DoubleDocValuesField	The field that was added to this Document.

Remarks

Syntactic sugar for encoding doubles as NumericDocValues via DoubleToRawInt64Bits(Double).

Per-document double values can be retrieved via GetDoubles(AtomicReader, String, Boolean).

NOTE: In most all cases this will be rather inefficient, requiring eight bytes per document. Consider encoding double values yourself with only as much precision as you require.

Exceptions

Type	Condition
System.ArgumentNullException	if the field name is `null`

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AddDoubleField(Document, String, Double, Field.Store)

Adds a stored or un-stored DoubleField with the provided value and default precisionStep PRECISION_STEP_DEFAULT (4).

Declaration

public static DoubleField AddDoubleField(this Document document, string name, double value, Field.Store stored)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Double	value	64-bit System.Double value
Field.Store	stored	YES if the content should also be stored

Returns

Type	Description
DoubleField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field name is `null`.

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AddDoubleField(Document, String, Double, FieldType)

Adds a stored or un-stored DoubleField with the provided value.

Expert: allows you to customize the FieldType.

Declaration

public static DoubleField AddDoubleField(this Document document, string name, double value, FieldType type)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Double	value	64-bit double value
FieldType	type	customized field type: must have NumericType of DOUBLE.

Returns

Type	Description
DoubleField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field name or type is `null`, or if the field type does not have a DOUBLE NumericType

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AddInt32Field(Document, String, Int32, Field.Store)

Adds a stored or un-stored Int32Field with the provided value and default precisionStep PRECISION_STEP_DEFAULT (4).

Declaration

public static Int32Field AddInt32Field(this Document document, string name, int value, Field.Store stored)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Int32	value	32-bit System.Int32 value
Field.Store	stored	YES if the content should also be stored

Returns

Type	Description
Int32Field	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddInt32Field(Document, String, Int32, FieldType)

Adds a stored or un-stored Int32Field with the provided value.

Expert: allows you to customize the FieldType.

Declaration

public static Int32Field AddInt32Field(this Document document, string name, int value, FieldType type)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Int32	value	32-bit System.Int32 value
FieldType	type	customized field type: must have NumericType of INT32.

Returns

Type	Description
Int32Field	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `type` is NONE
System.ArgumentException	if the field type does not have a NumericType of INT32

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AddInt64Field(Document, String, Int64, Field.Store)

Adds a stored or un-stored Int64Field with the provided value and default precisionStep PRECISION_STEP_DEFAULT (4).

Declaration

public static Int64Field AddInt64Field(this Document document, string name, long value, Field.Store stored)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Int64	value	64-bit System.Int64 value
Field.Store	stored	YES if the content should also be stored

Returns

Type	Description
Int64Field	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddInt64Field(Document, String, Int64, FieldType)

Adds a stored or un-stored Int64Field with the provided value.

Expert: allows you to customize the FieldType.

Declaration

public static Int64Field AddInt64Field(this Document document, string name, long value, FieldType type)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Int64	value	64-bit System.Int64 value
FieldType	type	customized field type: must have NumericType of INT64.

Returns

Type	Description
Int64Field	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `type` is NONE
System.ArgumentException	if the field type does not have a NumericType of INT64

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AddNumericDocValuesField(Document, String, Int64)

Adds a new NumericDocValuesField field with the specified 64-bit System.Int64 value

Declaration

public static NumericDocValuesField AddNumericDocValuesField(this Document document, string name, long value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Int64	value	64-bit System.Int64 value

Returns

Type	Description
NumericDocValuesField	The field that was added to this Document.

Remarks

If you also need to store the value, you should add a separate StoredField instance.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`

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AddSingleDocValuesField(Document, String, Single)

Adds a new SingleDocValuesField field with the specified 32-bit System.Single value

Declaration

public static SingleDocValuesField AddSingleDocValuesField(this Document document, string name, float value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Single	value	32-bit System.Single value

Returns

Type	Description
SingleDocValuesField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field name is `null`

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AddSingleField(Document, String, Single, Field.Store)

Adds a stored or un-stored SingleField with the provided value and default precisionStep PRECISION_STEP_DEFAULT (4).

Declaration

public static SingleField AddSingleField(this Document document, string name, float value, Field.Store stored)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Single	value	32-bit System.Single value
Field.Store	stored	YES if the content should also be stored

Returns

Type	Description
SingleField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddSingleField(Document, String, Single, FieldType)

Adds a stored or un-stored SingleField with the provided value.

Expert: allows you to customize the FieldType.

Declaration

public static SingleField AddSingleField(this Document document, string name, float value, FieldType type)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Single	value	32-bit System.Single value
FieldType	type	customized field type: must have NumericType of SINGLE.

Returns

Type	Description
SingleField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `type` is NONE
System.ArgumentException	if the field type does not have a SINGLE NumericType

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AddSortedDocValuesField(Document, String, BytesRef)

Adds a new SortedDocValuesField field.

Declaration

public static SortedDocValuesField AddSortedDocValuesField(this Document document, string name, BytesRef bytes)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
BytesRef	bytes	binary content

Returns

Type	Description
SortedDocValuesField	The field that was added to this Document.

Remarks

If you also need to store the value, you should add a separate StoredField instance.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`

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AddSortedSetDocValuesField(Document, String, BytesRef)

Adds a new SortedSetDocValuesField field.

Declaration

public static SortedSetDocValuesField AddSortedSetDocValuesField(this Document document, string name, BytesRef bytes)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
BytesRef	bytes	binary content

Returns

Type	Description
SortedSetDocValuesField	The field that was added to this Document.

Remarks

If you also need to store the value, you should add a separate StoredField instance.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`

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AddStoredField(Document, String, BytesRef)

Adds a stored-only field with the given binary value.

NOTE: the provided BytesRef is not copied so be sure not to change it until you're done with this field.

Declaration

public static StoredField AddStoredField(this Document document, string name, BytesRef value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
BytesRef	value	BytesRef pointing to binary content (not copied)

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddStoredField(Document, String, Byte[])

Adds a stored-only field with the given binary value.

NOTE: the provided byte[] is not copied so be sure not to change it until you're done with this field.

Declaration

public static StoredField AddStoredField(this Document document, string name, byte[] value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Byte[]	value	byte array pointing to binary content (not copied)

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddStoredField(Document, String, Byte[], Int32, Int32)

Adds a stored-only field with the given binary value.

NOTE: the provided byte[] is not copied so be sure not to change it until you're done with this field.

Declaration

public static StoredField AddStoredField(this Document document, string name, byte[] value, int offset, int length)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Byte[]	value	System.Byte array pointing to binary content (not copied)
System.Int32	offset	starting position of the byte array
System.Int32	length	valid length of the byte array

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddStoredField(Document, String, Double)

Adds a stored-only field with the given System.Double value.

Declaration

public static StoredField AddStoredField(this Document document, string name, double value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Double	value	System.Double value

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddStoredField(Document, String, Int32)

Adds a stored-only field with the given System.Int32 value.

Declaration

public static StoredField AddStoredField(this Document document, string name, int value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Int32	value	System.Int32 value

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddStoredField(Document, String, Int64)

Adds a stored-only field with the given System.Int64 value.

Declaration

public static StoredField AddStoredField(this Document document, string name, long value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Int64	value	System.Int64 value

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddStoredField(Document, String, Single)

Adds a stored-only field with the given System.Single value.

Declaration

public static StoredField AddStoredField(this Document document, string name, float value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.Single	value	System.Single value

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` is `null`.

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AddStoredField(Document, String, String)

Adds a stored-only field with the given System.String value.

Declaration

public static StoredField AddStoredField(this Document document, string name, string value)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.String	value	System.String value

Returns

Type	Description
StoredField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `value` is `null`.

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AddStringField(Document, String, String, Field.Store)

Adds a new StringField (a field that is indexed but not tokenized)

Declaration

public static StringField AddStringField(this Document document, string name, string value, Field.Store stored)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.String	value	System.String value
Field.Store	stored	YES if the content should also be stored

Returns

Type	Description
StringField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `value` is `null`.

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AddTextField(Document, String, TokenStream)

Adds a new un-stored TextField with TokenStream value.

Declaration

public static TextField AddTextField(this Document document, string name, TokenStream stream)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
TokenStream	stream	TokenStream value

Returns

Type	Description
TextField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `stream` is `null`.

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AddTextField(Document, String, TextReader)

Adds a new un-stored TextField with System.IO.TextReader value.

Declaration

public static TextField AddTextField(this Document document, string name, TextReader reader)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.IO.TextReader	reader	System.IO.TextReader value

Returns

Type	Description
TextField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `reader` is `null`

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AddTextField(Document, String, String, Field.Store)

Adds a new TextField with System.String value.

Declaration

public static TextField AddTextField(this Document document, string name, string value, Field.Store stored)

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	field name
System.String	value	System.String value
Field.Store	stored	YES if the content should also be stored

Returns

Type	Description
TextField	The field that was added to this Document.

Exceptions

Type	Condition
System.ArgumentNullException	if the field `name` or `value` is `null`.

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GetField<T>(Document, String)

Returns a field with the given name if any exist in this document cast to type T, or null. If multiple fields exists with this name, this method returns the first value added.

Declaration

public static T GetField<T>(this Document document, string name)

    where T : IIndexableField

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	Field name

Returns

Type	Description
T

Type Parameters

Name	Description
T

Exceptions

Type	Condition
System.InvalidCastException	If the field type cannot be cast to `T`.

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GetFields<T>(Document, String)

Returns an array of IIndexableFields with the given name, cast to type T. This method returns an empty array when there are no matching fields. It never returns null.

Declaration

public static T[] GetFields<T>(this Document document, string name)

    where T : IIndexableField

Parameters

Type	Name	Description
Document	document	This Document.
System.String	name	the name of the field

Returns

Type	Description
T[]	a IndexableField[] array

Type Parameters

Name	Description
T

Exceptions

Type	Condition
System.InvalidCastException	If the field type cannot be cast to .