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com.tangosol.io.pof
Class PofBufferWriter.UserTypeWriter

java.lang.Object
com.tangosol.util.Base
com.tangosol.io.pof.PofHelper
com.tangosol.io.pof.PofBufferWriter
com.tangosol.io.pof.PofBufferWriter.UserTypeWriter

All Implemented Interfaces:

PofConstants, PofWriter

Enclosing class:

PofBufferWriter

public static class PofBufferWriter.UserTypeWriter

extends PofBufferWriter

The UserTypeWriter implementation is a contextually-aware PofWriter whose purpose is to write the properties of a value of a specified user type. The "contextual awareness" refers to the fact that the UserTypeWriter maintains state about the type identifier, the PofWriter's property index position within the user type value, and a PofContext that may differ from the PofContext that provided the PofSerializer which is using this UserTypeWriter to serialize a user type.

Nested Class Summary

Nested classes/interfaces inherited from class com.tangosol.io.pof.PofBufferWriter

PofBufferWriter.ReferenceLibrary, PofBufferWriter.UserTypeWriter

Nested classes/interfaces inherited from class com.tangosol.io.pof.PofHelper

PofHelper.ReadableEntrySetMap, PofHelper.WriteableEntrySetMap

Field Summary

protected WritingPofHandler.Complex	m_complex The Complex value that corresponds to the user type that is being written.
protected boolean	m_fUserTypeBegin True iff the type and version identifier of the user type was written to the POF stream.
protected boolean	m_fUserTypeEnd True iff the user type was written to the POF stream.
protected int	m_iPrevProp The index of the last property written to the POF stream or -1 if the first property has yet to be written.
protected int	m_iProp The index of the user type being written.
protected int	m_nId The identity of the object to encode, or -1 if the identity shouldn't be encoded in the POF stream
protected int	m_nTypeId The type identifier of the user type that is being written.
protected int	m_nVersionId The version identifier of the user type that is being written.
protected PofBufferWriter.UserTypeWriter	m_writerNested The currently open nested writer, if any.

Fields inherited from class com.tangosol.io.pof.PofBufferWriter

m_ctx, m_handler, m_out, m_refs

Fields inherited from class com.tangosol.io.pof.PofHelper

BIGDECIMAL_ZERO, BIGINTEGER_MAX_LONG, BIGINTEGER_MIN_LONG, BINARY_EMPTY, BOOLEAN_ARRAY_EMPTY, BYTE_ARRAY_EMPTY, CHAR_ARRAY_EMPTY, COLLECTION_EMPTY, DOUBLE_ARRAY_EMPTY, FLOAT_ARRAY_EMPTY, INT_ARRAY_EMPTY, LONG_ARRAY_EMPTY, OBJECT_ARRAY_EMPTY, SHORT_ARRAY_EMPTY

Fields inherited from interface com.tangosol.io.pof.PofConstants

J_BIG_DECIMAL, J_BIG_INTEGER, J_BINARY, J_BOOLEAN, J_BOOLEAN_ARRAY, J_BYTE, J_BYTE_ARRAY, J_CHAR_ARRAY, J_CHARACTER, J_COLLECTION, J_DATE, J_DATETIME, J_DOUBLE, J_DOUBLE_ARRAY, J_FLOAT, J_FLOAT_ARRAY, J_INT_ARRAY, J_INTEGER, J_LONG, J_LONG_ARRAY, J_MAP, J_NULL, J_OBJECT_ARRAY, J_QUAD, J_RAW_DATE, J_RAW_DATETIME, J_RAW_DAY_TIME_INTERVAL, J_RAW_TIME, J_RAW_TIME_INTERVAL, J_RAW_YEAR_MONTH_INTERVAL, J_SHORT, J_SHORT_ARRAY, J_SPARSE_ARRAY, J_STRING, J_TIME, J_TIMESTAMP, J_USER_TYPE, MAX_DECIMAL128_SCALE, MAX_DECIMAL128_UNSCALED, MAX_DECIMAL32_SCALE, MAX_DECIMAL32_UNSCALED, MAX_DECIMAL64_SCALE, MAX_DECIMAL64_UNSCALED, MIN_DECIMAL128_SCALE, MIN_DECIMAL32_SCALE, MIN_DECIMAL64_SCALE, T_ARRAY, T_BOOLEAN, T_CHAR, T_CHAR_STRING, T_COLLECTION, T_DATE, T_DATETIME, T_DAY_TIME_INTERVAL, T_DECIMAL128, T_DECIMAL32, T_DECIMAL64, T_FLOAT128, T_FLOAT32, T_FLOAT64, T_IDENTITY, T_INT128, T_INT16, T_INT32, T_INT64, T_MAP, T_OCTET, T_OCTET_STRING, T_REFERENCE, T_SPARSE_ARRAY, T_TIME, T_TIME_INTERVAL, T_UNIFORM_ARRAY, T_UNIFORM_COLLECTION, T_UNIFORM_KEYS_MAP, T_UNIFORM_MAP, T_UNIFORM_SPARSE_ARRAY, T_UNKNOWN, T_YEAR_MONTH_INTERVAL, V_BOOLEAN_FALSE, V_BOOLEAN_TRUE, V_COLLECTION_EMPTY, V_FP_NAN, V_FP_NEG_INFINITY, V_FP_POS_INFINITY, V_INT_0, V_INT_1, V_INT_10, V_INT_11, V_INT_12, V_INT_13, V_INT_14, V_INT_15, V_INT_16, V_INT_17, V_INT_18, V_INT_19, V_INT_2, V_INT_20, V_INT_21, V_INT_22, V_INT_3, V_INT_4, V_INT_5, V_INT_6, V_INT_7, V_INT_8, V_INT_9, V_INT_NEG_1, V_REFERENCE_NULL, V_STRING_ZERO_LENGTH

Constructor Summary

PofBufferWriter.UserTypeWriter(PofBufferWriter parent, WriteBuffer.BufferOutput out, PofContext ctx, int nTypeId, int iProp)
Construct a UserTypeWriter for writing the property values of a user type.

PofBufferWriter.UserTypeWriter(PofBufferWriter parent, WritingPofHandler handler, PofContext ctx, int nTypeId, int iProp)
Construct a UserTypeWriter for writing the property values of a user type.

PofBufferWriter.UserTypeWriter(PofBufferWriter parent, WritingPofHandler handler, PofContext ctx, int nTypeId, int iProp, int nId)
Construct a UserTypeWriter for writing the property values of a user type.

PofBufferWriter.UserTypeWriter(WriteBuffer.BufferOutput out, PofContext ctx, int nTypeId, int iProp)
Construct a UserTypeWriter for writing the property values of a user type.

PofBufferWriter.UserTypeWriter(WritingPofHandler handler, PofContext ctx, int nTypeId, int iProp)
Construct a UserTypeWriter for writing the property values of a user type.

Method Summary

protected void	beginProperty(int iProp) Report that a POF property is about to be written to the POF stream.
protected void	closeNested() Notify the UserTypeWriter that it is being "closed".
PofWriter	createNestedPofWriter(int iProp) Obtain a PofWriter that can be used to write a set of properties into a single property of the current user type. The returned PofWriter is only valid from the time that it is returned until the next call is made to this PofWriter.
void	enableReferences() Ensure that references (support for cyclic dependencies) are enabled.
protected void	endProperty(int iProp) Signifies the termination of the current POF property.
protected PofBufferWriter	getParentWriter() If this writer is contextually within a user type, obtain the writer which created this writer in order to write the user type.
int	getUserTypeId() Determine the user type that is currently being written.
int	getVersionId() Determine the version identifier of the user type that is currently being written.
protected void	onException(Exception e) Called when an unexpected exception is caught while writing to the POF stream.
void	setVersionId(int nVersionId) Set the version identifier of the user type that is currently being written.
void	writeRemainder(Binary binProps) Write the remaining properties to the POF stream, terminating the writing of the currrent user type. As part of writing out a user type, this method must be called by the PofSerializer that is writing out the user type, or the POF stream will be corrupted. <p/> Calling this method terminates the current user type by writing a -1 to the POF stream after the last indexed property. Subsequent calls to the various writeXYZ methods of this interface will fail after this method is called.
protected void	writeUserTypeInfo() Write out the type and version identifiers of the user type to the POF stream, if they haven't already been written.

Methods inherited from class com.tangosol.io.pof.PofBufferWriter

assertEqual, getBufferOutput, getNanos, getPofContext, getPofHandler, setPofContext, writeBigDecimal, writeBigInteger, writeBinary, writeBoolean, writeBoolean, writeBooleanArray, writeByte, writeByte, writeByteArray, writeChar, writeChar, writeCharArray, writeCollection, writeCollection, writeDate, writeDateTime, writeDateTime, writeDateTimeWithZone, writeDateTimeWithZone, writeDouble, writeDouble, writeDoubleArray, writeFloat, writeFloat, writeFloatArray, writeInt, writeInt, writeIntArray, writeLong, writeLong, writeLongArray, writeLongArray, writeLongArray, writeMap, writeMap, writeMap, writeObject, writeObjectArray, writeObjectArray, writeRawDate, writeRawDateTime, writeRawDayTimeInterval, writeRawQuad, writeRawTime, writeRawTimeInterval, writeRawYearMonthInterval, writeShort, writeShort, writeShortArray, writeString, writeTime, writeTime, writeTimeWithZone, writeTimeWithZone, writeUserType

Methods inherited from class com.tangosol.io.pof.PofHelper

calcDecimalSize, checkDate, checkDayTimeInterval, checkDecimalRange, checkElementCount, checkReferenceRange, checkTime, checkTimeInterval, checkTimeZone, checkType, checkYearMonthInterval, convertNumber, convertToDate, decodeTinyInt, encodeTinyInt, formatDate, formatTime, formatTime, getJavaTypeId, getPofTypeId, readAsBigDecimal, readAsBigInteger, readAsChar, readAsDouble, readAsFloat, readAsInt, readAsLong, readAsQuad, readBigDecimal, readBigInteger, readChar, readQuad, readRawDate, readRawTime, resizeArray, skipPackedInts, skipUniformValue, skipValue, writeBigDecimal, writeBigInteger, writeDate, writeTime

Field Detail

m_nTypeId

protected int m_nTypeId

The type identifier of the user type that is being written.

m_nVersionId

protected int m_nVersionId

The version identifier of the user type that is being written.

m_iProp

protected int m_iProp

The index of the user type being written.

m_nId

protected int m_nId

The identity of the object to encode, or -1 if the identity shouldn't be encoded in the POF stream

m_iPrevProp

protected int m_iPrevProp

The index of the last property written to the POF stream or -1 if the first property has yet to be written.

m_fUserTypeBegin

protected boolean m_fUserTypeBegin

True iff the type and version identifier of the user type was written to the POF stream.

m_fUserTypeEnd

protected boolean m_fUserTypeEnd

True iff the user type was written to the POF stream.

m_complex

protected WritingPofHandler.Complex m_complex

The Complex value that corresponds to the user type that is being written.

m_writerNested

protected PofBufferWriter.UserTypeWriter m_writerNested

The currently open nested writer, if any.

Constructor Detail

PofBufferWriter.UserTypeWriter

public PofBufferWriter.UserTypeWriter(WriteBuffer.BufferOutput out,
                                      PofContext ctx,
                                      int nTypeId,
                                      int iProp)

Construct a UserTypeWriter for writing the property values of a user type.

Parameters:

out - the BufferOutput object to write to; must not be null

ctx - the PofContext to use for writing the user type property values within the user type that this writer will be writing

nTypeId - the type identifier of the user type; must be non-negative

iProp - the index of the user type being written

PofBufferWriter.UserTypeWriter

public PofBufferWriter.UserTypeWriter(PofBufferWriter parent,
                                      WriteBuffer.BufferOutput out,
                                      PofContext ctx,
                                      int nTypeId,
                                      int iProp)

Construct a UserTypeWriter for writing the property values of a user type.

Parameters:

parent - the containing PofBufferWriter

out - the BufferOutput object to write to; must not be null

ctx - the PofContext to use for writing the user type property values within the user type that this writer will be writing

nTypeId - the type identifier of the user type; must be non-negative

iProp - the index of the user type being written

PofBufferWriter.UserTypeWriter

public PofBufferWriter.UserTypeWriter(WritingPofHandler handler,
                                      PofContext ctx,
                                      int nTypeId,
                                      int iProp)

Construct a UserTypeWriter for writing the property values of a user type.

Parameters:

handler - the WritingPofHandler used to write user type data (except for the user type id itself, which is passed as a constructor argument)

ctx - the PofContext to use for writing the user type property values within the user type that this writer will be writing

nTypeId - the type identifier of the user type; must be non-negative

iProp - the index of the user type being written

PofBufferWriter.UserTypeWriter

public PofBufferWriter.UserTypeWriter(PofBufferWriter parent,
                                      WritingPofHandler handler,
                                      PofContext ctx,
                                      int nTypeId,
                                      int iProp)

Construct a UserTypeWriter for writing the property values of a user type.

Parameters:

parent - the containing PofBufferWriter

handler - the WritingPofHandler used to write user type data (except for the user type id itself, which is passed as a constructor argument)

ctx - the PofContext to use for writing the user type property values within the user type that this writer will be writing

nTypeId - the type identifier of the user type; must be non-negative

iProp - the index of the user type being written

PofBufferWriter.UserTypeWriter

public PofBufferWriter.UserTypeWriter(PofBufferWriter parent,
                                      WritingPofHandler handler,
                                      PofContext ctx,
                                      int nTypeId,
                                      int iProp,
                                      int nId)

Construct a UserTypeWriter for writing the property values of a user type.

Parameters:

parent - the containing PofBufferWriter

handler - the WritingPofHandler used to write user type data (except for the user type id itself, which is passed as a constructor argument)

ctx - the PofContext to use for writing the user type property values within the user type that this writer will be writing

nTypeId - the type identifier of the user type; must be non-negative

iProp - the index of the user type being written

nId - the identity of the object to encode, or -1 if the identity shouldn't be encoded in the POF stream

Method Detail

getUserTypeId

public int getUserTypeId()

Determine the user type that is currently being written.

Specified by:

getUserTypeId in interface PofWriter

Overrides:

getUserTypeId in class PofBufferWriter

Returns:

the user type identifier, or -1 if the PofWriter is not currently writing a user type

getVersionId

public int getVersionId()

Determine the version identifier of the user type that is currently being written.

Specified by:

getVersionId in interface PofWriter

Overrides:

getVersionId in class PofBufferWriter

Returns:

the integer version ID of the user type; always non-negative

setVersionId

public void setVersionId(int nVersionId)

Set the version identifier of the user type that is currently being written.

Specified by:

setVersionId in interface PofWriter

Overrides:

setVersionId in class PofBufferWriter

Parameters:

nVersionId - the user type identifier; must be non-negative

createNestedPofWriter

public PofWriter createNestedPofWriter(int iProp)
                                throws IOException

Obtain a PofWriter that can be used to write a set of properties into a single property of the current user type. The returned PofWriter is only valid from the time that it is returned until the next call is made to this PofWriter.

Specified by:

createNestedPofWriter in interface PofWriter

Overrides:

createNestedPofWriter in class PofBufferWriter

Parameters:

iProp - the property index

Returns:

a PofWriter whose contents are nested into a single property of this PofWriter

Throws:

IOException - if an I/O error occurs

writeRemainder

public void writeRemainder(Binary binProps)
                    throws IOException

Write the remaining properties to the POF stream, terminating the writing of the currrent user type. As part of writing out a user type, this method must be called by the PofSerializer that is writing out the user type, or the POF stream will be corrupted. <p/> Calling this method terminates the current user type by writing a -1 to the POF stream after the last indexed property. Subsequent calls to the various writeXYZ methods of this interface will fail after this method is called.

Specified by:

writeRemainder in interface PofWriter

Overrides:

writeRemainder in class PofBufferWriter

Parameters:

binProps - a Binary object containing zero or more indexed properties in binary POF encoded form; may be null

Throws:

IOException - if an I/O error occurs

getParentWriter

protected PofBufferWriter getParentWriter()

If this writer is contextually within a user type, obtain the writer which created this writer in order to write the user type.

Overrides:

getParentWriter in class PofBufferWriter

Returns:

the containing writer

beginProperty

protected void beginProperty(int iProp)
                      throws IOException

Report that a POF property is about to be written to the POF stream. <p/> This method call will be followed by one or more separate calls to a "write" method and the property extent will then be terminated by a call to PofBufferWriter.endProperty(int).

Overrides:

beginProperty in class PofBufferWriter

Parameters:

iProp - the index of the property being written

Throws:

IOException - if an I/O error occurs

endProperty

protected void endProperty(int iProp)

Signifies the termination of the current POF property.

Overrides:

endProperty in class PofBufferWriter

Parameters:

iProp - the index of the current property

closeNested

protected void closeNested()

Notify the UserTypeWriter that it is being "closed". This notification allows the UserTypeWriter to write any remaining data that it has pending to write.

onException

protected void onException(Exception e)
                    throws IOException

Called when an unexpected exception is caught while writing to the POF stream. <p/> If the given exception wraps an IOException, the IOException is unwrapped and rethrown; otherwise the given exception is rethrown.

Overrides:

onException in class PofBufferWriter

Parameters:

e - the exception

Throws:

IOException - the wrapped IOException, if the given exception is a wrapped IOException

writeUserTypeInfo

protected void writeUserTypeInfo()
                          throws IOException

Write out the type and version identifiers of the user type to the POF stream, if they haven't already been written.

Throws:

IOException - on I/O error

enableReferences

public void enableReferences()

Ensure that references (support for cyclic dependencies) are enabled.

Overrides:

enableReferences in class PofBufferWriter

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