Package com.ibm.icu.util

Class BytesTrieBuilder

  • public final class BytesTrieBuilder
extends StringTrieBuilder
    Builder class for BytesTrie.

    This class is not intended for public subclassing.

    Author:
    Markus W. Scherer
    Status:
    Stable ICU 4.8.

    • Constructor Detail

      • BytesTrieBuilder

        public BytesTrieBuilder()
        Constructs an empty builder.
        Status:
        Stable ICU 4.8.

    • Method Detail

      • add

        public BytesTrieBuilder add​(byte[] sequence,
                            int length,
                            int value)
        Adds a (byte sequence, value) pair. The byte sequence must be unique. Bytes 0..length-1 will be copied; the builder does not keep a reference to the input array.
        Parameters:
        sequence - The array that contains the byte sequence, starting at index 0.
        length - The length of the byte sequence.
        value - The value associated with this byte sequence.
        Returns:
        this
        Status:
        Stable ICU 4.8.

      • build

        public BytesTrie build​(StringTrieBuilder.Option buildOption)
        Builds a BytesTrie for the add()ed data. Once built, no further data can be add()ed until clear() is called.

        A BytesTrie cannot be empty. At least one (byte sequence, value) pair must have been add()ed.

        Multiple calls to build() or buildByteBuffer() return tries or buffers which share the builder's byte array, without rebuilding. The byte array must not be modified via the buildByteBuffer() result object. After clear() has been called, a new array will be used.

        Parameters:
        buildOption - Build option, see StringTrieBuilder.Option.
        Returns:
        A new BytesTrie for the add()ed data.
        Status:
        Stable ICU 4.8.

      • buildByteBuffer

        public ByteBuffer buildByteBuffer​(StringTrieBuilder.Option buildOption)
        Builds a BytesTrie for the add()ed data and byte-serializes it. Once built, no further data can be add()ed until clear() is called.

        A BytesTrie cannot be empty. At least one (byte sequence, value) pair must have been add()ed.

        Multiple calls to build() or buildByteBuffer() return tries or buffers which share the builder's byte array, without rebuilding. Do not modify the bytes in the buffer! After clear() has been called, a new array will be used.

        The serialized BytesTrie is accessible via the buffer's array()/arrayOffset()+position() or remaining()/get(byte[]) etc.

        Parameters:
        buildOption - Build option, see StringTrieBuilder.Option.
        Returns:
        A ByteBuffer with the byte-serialized BytesTrie for the add()ed data. The buffer is not read-only and array() can be called.
        Status:
        Stable ICU 4.8.

      • clear

        public BytesTrieBuilder clear()
        Removes all (byte sequence, value) pairs. New data can then be add()ed and a new trie can be built.
        Returns:
        this
        Status:
        Stable ICU 4.8.

      • write

        @Deprecated
protected int write​(int b)
        Deprecated.
        This API is ICU internal only.
        Specified by:
        write in class StringTrieBuilder
        Status:
        Internal. This API is ICU internal only.

      • write

        @Deprecated
protected int write​(int offset,
                    int length)
        Deprecated.
        This API is ICU internal only.
        Specified by:
        write in class StringTrieBuilder
        Status:
        Internal. This API is ICU internal only.

      • writeValueAndFinal

        @Deprecated
protected int writeValueAndFinal​(int i,
                                 boolean isFinal)
        Deprecated.
        This API is ICU internal only.
        Specified by:
        writeValueAndFinal in class StringTrieBuilder
        Status:
        Internal. This API is ICU internal only.

      • writeValueAndType

        @Deprecated
protected int writeValueAndType​(boolean hasValue,
                                int value,
                                int node)
        Deprecated.
        This API is ICU internal only.
        Specified by:
        writeValueAndType in class StringTrieBuilder
        Status:
        Internal. This API is ICU internal only.

      • writeDeltaTo

        @Deprecated
protected int writeDeltaTo​(int jumpTarget)
        Deprecated.
        This API is ICU internal only.
        Specified by:
        writeDeltaTo in class StringTrieBuilder
        Status:
        Internal. This API is ICU internal only.

      • internalEncodeDelta

        @Deprecated
public static final int internalEncodeDelta​(int i,
                                            byte[] intBytes)
        Deprecated.
        This API is ICU internal only.
        Status:
        Internal. This API is ICU internal only.