Package org.apache.iotdb.db.wal.utils

Class WALWriteUtils

java.lang.Object

org.apache.iotdb.db.wal.utils.WALWriteUtils

public class WALWriteUtils
extends java.lang.Object

Like ReadWriteIOUtils

Field Summary

Fields

Modifier and Type	Field	Description
static int	BOOLEAN_LEN
static int	DOUBLE_LEN
static int	FLOAT_LEN
static int	INT_LEN
static int	LONG_LEN
static int	SHORT_LEN

Method Summary

Modifier and Type	Method	Description
static int	sizeToWrite(org.apache.iotdb.tsfile.write.schema.MeasurementSchema measurementSchema)
static int	write(byte n, IWALByteBufferView buffer)	write a byte n to byteBuffer.
static int	write(double n, IWALByteBufferView buffer)	write a double n to byteBuffer.
static int	write(float n, IWALByteBufferView buffer)	write a float n to byteBuffer.
static int	write(int n, IWALByteBufferView buffer)	write a int n to byteBuffer.
static int	write(long n, IWALByteBufferView buffer)	write a long n to byteBuffer.
static int	write(short n, IWALByteBufferView buffer)	write a short n to byteBuffer.
static int	write(java.lang.Boolean flag, IWALByteBufferView buffer)	write a byte to byteBuffer according to flag.
static int	write(java.lang.String s, IWALByteBufferView buffer)	write string to byteBuffer.
static int	write(org.apache.iotdb.tsfile.file.metadata.enums.CompressionType compressionType, IWALByteBufferView buffer)	CompressionType.
static int	write(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType, IWALByteBufferView buffer)	TSDataType.
static int	write(org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding encoding, IWALByteBufferView buffer)	TSEncoding.
static int	write(org.apache.iotdb.tsfile.utils.Binary n, IWALByteBufferView buffer)	write a short n to byteBuffer.
static int	write(org.apache.iotdb.tsfile.write.schema.MeasurementSchema measurementSchema, IWALByteBufferView buffer)	MeasurementSchema.

Methods inherited from class java.lang.Object

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

Field Detail

BOOLEAN_LEN

public static final int BOOLEAN_LEN

See Also:

Constant Field Values

SHORT_LEN

public static final int SHORT_LEN

See Also:

Constant Field Values

INT_LEN

public static final int INT_LEN

See Also:

Constant Field Values

LONG_LEN

public static final int LONG_LEN

See Also:

Constant Field Values

DOUBLE_LEN

public static final int DOUBLE_LEN

See Also:

Constant Field Values

FLOAT_LEN

public static final int FLOAT_LEN

See Also:

Constant Field Values

Method Detail

write

public static int write(java.lang.Boolean flag,
                        IWALByteBufferView buffer)

write a byte to byteBuffer according to flag. If flag is true, write 1, else write 0.

write

public static int write(byte n,
                        IWALByteBufferView buffer)

write a byte n to byteBuffer.

Returns:

The number of bytes used to represent a byte value in two's complement binary form.

write

public static int write(short n,
                        IWALByteBufferView buffer)

write a short n to byteBuffer.

Returns:

The number of bytes used to represent n.

write

public static int write(org.apache.iotdb.tsfile.utils.Binary n,
                        IWALByteBufferView buffer)

write a short n to byteBuffer.

Returns:

The number of bytes used to represent n.

write

public static int write(int n,
                        IWALByteBufferView buffer)

write a int n to byteBuffer.

Returns:

The number of bytes used to represent n.

write

public static int write(long n,
                        IWALByteBufferView buffer)

write a long n to byteBuffer.

write

public static int write(float n,
                        IWALByteBufferView buffer)

write a float n to byteBuffer.

write

public static int write(double n,
                        IWALByteBufferView buffer)

write a double n to byteBuffer.

write

public static int write(java.lang.String s,
                        IWALByteBufferView buffer)

write string to byteBuffer.

Returns:

the length of string represented by byte[].

write

public static int write(org.apache.iotdb.tsfile.file.metadata.enums.TSDataType dataType,
                        IWALByteBufferView buffer)

TSDataType.

write

public static int write(org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding encoding,
                        IWALByteBufferView buffer)

TSEncoding.

write

public static int write(org.apache.iotdb.tsfile.file.metadata.enums.CompressionType compressionType,
                        IWALByteBufferView buffer)

CompressionType.

write

public static int write(org.apache.iotdb.tsfile.write.schema.MeasurementSchema measurementSchema,
                        IWALByteBufferView buffer)

MeasurementSchema.

sizeToWrite

public static int sizeToWrite(org.apache.iotdb.tsfile.write.schema.MeasurementSchema measurementSchema)