Class StringHelper

Methods for manipulating strings.

This is a Lucene.NET INTERNAL API, use at your own risk
Inheritance
System.Object
StringHelper
Namespace: Lucene.Net.Util
Assembly: Lucene.Net.dll
Syntax
public abstract class StringHelper : object

Fields

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GOOD_FAST_HASH_SEED

Pass this as the seed to Murmurhash3_x86_32(Byte[], Int32, Int32, Int32).

Declaration
public static readonly int GOOD_FAST_HASH_SEED
Field Value
Type Description
System.Int32

Properties

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VersionComparer

Returns a IComparer{string} over versioned strings such as X.YY.Z

This is a Lucene.NET INTERNAL API, use at your own risk
Declaration
public static IComparer<string> VersionComparer { get; }
Property Value
Type Description
IComparer<System.String>

Methods

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BytesDifference(BytesRef, BytesRef)

Compares two BytesRef, element by element, and returns the number of elements common to both arrays.

Declaration
public static int BytesDifference(BytesRef left, BytesRef right)
Parameters
Type Name Description
BytesRef left

The first BytesRef to compare.

BytesRef right

The second BytesRef to compare.

Returns
Type Description
System.Int32

The number of common elements.

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EndsWith(BytesRef, BytesRef)

Returns true if the ref ends with the given suffix. Otherwise false.

Declaration
public static bool EndsWith(BytesRef ref, BytesRef suffix)
Parameters
Type Name Description
BytesRef ref

The BytesRef to test.

BytesRef suffix

The expected suffix

Returns
Type Description
System.Boolean

Returns true if the ref ends with the given suffix. Otherwise false.

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Equals(String, String)

Declaration
public static bool Equals(string s1, string s2)
Parameters
Type Name Description
System.String s1
System.String s2
Returns
Type Description
System.Boolean
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Murmurhash3_x86_32(BytesRef, Int32)

Returns the MurmurHash3_x86_32 hash. Original source/tests at https://github.com/yonik/java_util/.

Declaration
public static int Murmurhash3_x86_32(BytesRef bytes, int seed)
Parameters
Type Name Description
BytesRef bytes
System.Int32 seed
Returns
Type Description
System.Int32
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Murmurhash3_x86_32(Byte[], Int32, Int32, Int32)

Returns the MurmurHash3_x86_32 hash. Original source/tests at https://github.com/yonik/java_util/.

Declaration
public static int Murmurhash3_x86_32(byte[] data, int offset, int len, int seed)
Parameters
Type Name Description
System.Byte[] data
System.Int32 offset
System.Int32 len
System.Int32 seed
Returns
Type Description
System.Int32
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StartsWith(BytesRef, BytesRef)

Returns true if the ref starts with the given prefix. Otherwise false.

Declaration
public static bool StartsWith(BytesRef ref, BytesRef prefix)
Parameters
Type Name Description
BytesRef ref

The BytesRef to test.

BytesRef prefix

The expected prefix

Returns
Type Description
System.Boolean

Returns true if the ref starts with the given prefix. Otherwise false.