A PdxReader will be passed to PdxSerializable.fromData or during deserialization of a PDX. More...

#include <PdxReader.hpp>

Public Member Functions
virtual bool	hasField (const std::string &fieldName)=0
	Checks if the named field exists and returns the result.

virtual bool	isIdentityField (const std::string &fieldName)=0
	Checks if the named field was `PdxWriter#markIdentityField`marked as an identity field.

	PdxReader ()
	constructors

virtual int8_t **	readArrayOfByteArrays (const std::string &fieldName, int32_t &arrayLength, int32_t **elementLength)=0
	Read a int8_t** value from the `PdxReader` and sets ArrayOfByteArray's length and individual ByteArray's length.

virtual bool	readBoolean (const std::string &fieldName)=0
	Read a bool value from the `PdxReader`.

virtual std::vector< bool >	readBooleanArray (const std::string &fieldName)=0
	Read a bool* value from the `PdxReader` and sets array length.

virtual int8_t	readByte (const std::string &fieldName)=0
	Read a int8_t value from the `PdxReader`.

virtual std::vector< int8_t >	readByteArray (const std::string &fieldName)=0
	Read a int8_t* value from the `PdxReader` and sets array length.

virtual char16_t	readChar (const std::string &fieldName)=0
	Read a wide char value from the `PdxReader`.

virtual std::vector< char16_t >	readCharArray (const std::string &fieldName)=0
	Read a char16_t* value from the `PdxReader` and sets array length.

virtual std::shared_ptr< CacheableDate >	readDate (const std::string &fieldName)=0
	Read a std::shared_ptr<CacheableDate> value from the `PdxReader`.

virtual double	readDouble (const std::string &fieldName)=0
	Read a double value from the `PdxReader`.

virtual std::vector< double >	readDoubleArray (const std::string &fieldName)=0
	Read a double* value from the `PdxReader` and sets array length.

virtual float	readFloat (const std::string &fieldName)=0
	Read a float value from the `PdxReader`.

virtual std::vector< float >	readFloatArray (const std::string &fieldName)=0
	Read a float* value from the `PdxReader` and sets array length.

virtual int32_t	readInt (const std::string &fieldName)=0
	Read a int32_t value from the `PdxReader`.

virtual std::vector< int32_t >	readIntArray (const std::string &fieldName)=0
	Read a int32_t* value from the `PdxReader` and sets array length.

virtual int64_t	readLong (const std::string &fieldName)=0
	Read a int64_t value from the `PdxReader`.

virtual std::vector< int64_t >	readLongArray (const std::string &fieldName)=0
	Read a int64_t* value from the `PdxReader` and sets array length.

virtual std::shared_ptr< Cacheable >	readObject (const std::string &fieldName)=0
	Read a std::shared_ptr<Cacheable> value from the `PdxReader`.

virtual std::shared_ptr< CacheableObjectArray >	readObjectArray (const std::string &fieldName)=0
	Read a std::shared_ptr<CacheableObjectArray> value from the `PdxReader`.

virtual int16_t	readShort (const std::string &fieldName)=0
	Read a int16_t value from the `PdxReader`.

virtual std::vector< int16_t >	readShortArray (const std::string &fieldName)=0
	Read a int16_t* value from the `PdxReader` and sets array length.

virtual std::string	readString (const std::string &fieldName)=0
	Read a std::string value from the `PdxReader`.

virtual std::vector< std::string >	readStringArray (const std::string &fieldName)=0
	Read a array of strings from the `PdxReader`.

virtual std::shared_ptr< PdxUnreadFields >	readUnreadFields ()=0
	This method returns an object that represents all the unread fields which must be passed to `PdxWriter#writeUnreadFields` in the toData code.

virtual	~PdxReader ()
	destructor

Detailed Description

A PdxReader will be passed to PdxSerializable.fromData or during deserialization of a PDX.

The domain class needs to deserialize field members using this abstract class. This class is implemented by Native Client. Each readXXX call will return the field's value. If the serialized PDX does not contain the named field then a default value will be returned. Standard Java defaults are used. For Objects this is null and for primitives it is 0 or 0.0.

Note: Implementations of PdxReader that are internal to the Native Client library may be returned to clients via instances of PdxReader&. For those implementations, any non-nullptr, non-empty strings returned from PdxReader::readString() or PdxReader::readWideString() must be freed with DataInput::freeUTFMemory(). Arrays returned from PdxReader::readStringArray() or PdxReader::readWideStringArray() must be freed with GF_SAFE_DELETE_ARRAY once their constituent strings have been freed with DataInput::freeUTFMemory().; Custom implementations of PdxReader are not subject to this restriction.

Constructor & Destructor Documentation

◆ PdxReader()

apache::geode::client::PdxReader::PdxReader ( )

inline

constructors

◆ ~PdxReader()

virtual apache::geode::client::PdxReader::~PdxReader ( )

inlinevirtual

destructor

Member Function Documentation

◆ hasField()

virtual bool apache::geode::client::PdxReader::hasField ( const std::string & fieldName )

pure virtual

Checks if the named field exists and returns the result.

This can be useful when writing code that handles more than one version of a PDX class.

Parameters

fieldName the name of the field to check

Returns: true if the named field exists; otherwise false

◆ isIdentityField()

virtual bool apache::geode::client::PdxReader::isIdentityField ( const std::string & fieldName )

pure virtual

Checks if the named field was PdxWriter#markIdentityFieldmarked as an identity field.

Note that if no fields have been marked then all the fields are used as identity fields even though this method will return false since none of them have been marked.

Parameters

fieldname the name of the field to check

Returns: true if the named field exists and was marked as an identify field; otherwise false

◆ readArrayOfByteArrays()

virtual int8_t ** apache::geode::client::PdxReader::readArrayOfByteArrays	(	const std::string &	fieldName,
		int32_t &	arrayLength,
		int32_t **	elementLength
	)

pure virtual

Read a int8_t** value from the PdxReader and sets ArrayOfByteArray's length and individual ByteArray's length.

C++ int8_t** is mapped to Java byte[][].

Parameters

fieldName	name of the field to read
arrayLength	length is set with number of int8_t* elements
elementLength	elementLength is set with the length value of individual byte arrays.

Returns: value of type int8_t**.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readBoolean()

virtual bool apache::geode::client::PdxReader::readBoolean ( const std::string & fieldName )

pure virtual

Read a bool value from the PdxReader.

C++ bool is mapped to Java boolean

Parameters

fieldName name of the field to read

Returns: value of type bool.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readBooleanArray()

virtual std::vector< bool > apache::geode::client::PdxReader::readBooleanArray ( const std::string & fieldName )

pure virtual

Read a bool* value from the PdxReader and sets array length.

C++ bool* is mapped to Java boolean[]

Parameters

fieldName name of the field to read

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readByte()

virtual int8_t apache::geode::client::PdxReader::readByte ( const std::string & fieldName )

pure virtual

Read a int8_t value from the PdxReader.

C++ int8_t is mapped to Java byte

Parameters

fieldName name of the field to read

Returns: value of type int8_t.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readByteArray()

virtual std::vector< int8_t > apache::geode::client::PdxReader::readByteArray ( const std::string & fieldName )

pure virtual

Read a int8_t* value from the PdxReader and sets array length.

C++ int8_t* is mapped to Java byte[].

Parameters

fieldName name of the field to read

Returns: value of type int8_t*.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readChar()

virtual char16_t apache::geode::client::PdxReader::readChar ( const std::string & fieldName )

pure virtual

Read a wide char value from the PdxReader.

C++ char16_t is mapped to Java char

Parameters

fieldName name of the field to read.

Returns: value of type wchar_t.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readCharArray()

virtual std::vector< char16_t > apache::geode::client::PdxReader::readCharArray ( const std::string & fieldName )

pure virtual

Read a char16_t* value from the PdxReader and sets array length.

C++ char16_t* is mapped to Java char[].

Parameters

fieldName name of the field to read

Returns: value of type char16_t*.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readDate()

virtual std::shared_ptr< CacheableDate > apache::geode::client::PdxReader::readDate ( const std::string & fieldName )

pure virtual

Read a std::shared_ptr<CacheableDate> value from the PdxReader.

C++ std::shared_ptr<CacheableDate> is mapped to Java Date

Parameters

fieldName name of the field to read

Returns: value of type std::shared_ptr<CacheableDate>.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readDouble()

virtual double apache::geode::client::PdxReader::readDouble ( const std::string & fieldName )

pure virtual

Read a double value from the PdxReader.

C++ double is mapped to Java double

Parameters

fieldName name of the field to read

Returns: value of type double.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readDoubleArray()

virtual std::vector< double > apache::geode::client::PdxReader::readDoubleArray ( const std::string & fieldName )

pure virtual

Read a double* value from the PdxReader and sets array length.

C++ double* is mapped to Java double[].

Parameters

fieldName name of the field to read

Returns: value of type double*.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readFloat()

virtual float apache::geode::client::PdxReader::readFloat ( const std::string & fieldName )

pure virtual

Read a float value from the PdxReader.

C++ float is mapped to Java float

Parameters

fieldName name of the field to read

Returns: value of type float.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readFloatArray()

virtual std::vector< float > apache::geode::client::PdxReader::readFloatArray ( const std::string & fieldName )

pure virtual

Read a float* value from the PdxReader and sets array length.

C++ float* is mapped to Java float[].

Parameters

fieldName name of the field to read

Returns: value of type float*.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readInt()

virtual int32_t apache::geode::client::PdxReader::readInt ( const std::string & fieldName )

pure virtual

Read a int32_t value from the PdxReader.

C++ int32_t is mapped to Java int

Parameters

fieldName name of the field to read

Returns: value of type int32_t.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readIntArray()

virtual std::vector< int32_t > apache::geode::client::PdxReader::readIntArray ( const std::string & fieldName )

pure virtual

Read a int32_t* value from the PdxReader and sets array length.

C++ int32_t* is mapped to Java int[].

Parameters

fieldName name of the field to read

Returns: value of type int32_t*.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readLong()

virtual int64_t apache::geode::client::PdxReader::readLong ( const std::string & fieldName )

pure virtual

Read a int64_t value from the PdxReader.

C++ int64_t is mapped to Java long

Parameters

fieldName name of the field to read

Returns: value of type int64_t.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readLongArray()

virtual std::vector< int64_t > apache::geode::client::PdxReader::readLongArray ( const std::string & fieldName )

pure virtual

Read a int64_t* value from the PdxReader and sets array length.

C++ int64_t* is mapped to Java long[].

Parameters

fieldName name of the field to read

Returns: value of type int64_t*.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readObject()

virtual std::shared_ptr< Cacheable > apache::geode::client::PdxReader::readObject ( const std::string & fieldName )

pure virtual

Read a std::shared_ptr<Cacheable> value from the PdxReader.

C++ std::shared_ptr<Cacheable> is mapped to Java object

Parameters

fieldName name of the field to read

Returns: value of type std::shared_ptr<Cacheable>.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readObjectArray()

virtual std::shared_ptr< CacheableObjectArray > apache::geode::client::PdxReader::readObjectArray ( const std::string & fieldName )

pure virtual

Read a std::shared_ptr<CacheableObjectArray> value from the PdxReader.

C++ std::shared_ptr<CacheableObjectArray> is mapped to Java Object[].

Parameters

fieldName name of the field to read

Returns: value of type std::shared_ptr<CacheableObjectArray>.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readShort()

virtual int16_t apache::geode::client::PdxReader::readShort ( const std::string & fieldName )

pure virtual

Read a int16_t value from the PdxReader.

C++ int16_t is mapped to Java short

Parameters

fieldName name of the field to read

Returns: value of type int16_t.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readShortArray()

virtual std::vector< int16_t > apache::geode::client::PdxReader::readShortArray ( const std::string & fieldName )

pure virtual

Read a int16_t* value from the PdxReader and sets array length.

C++ int16_t* is mapped to Java short[].

Parameters

fieldName name of the field to read

Returns: value of type int16_t*.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readString()

virtual std::string apache::geode::client::PdxReader::readString ( const std::string & fieldName )

pure virtual

Read a std::string value from the PdxReader.

C++ std::string is mapped to Java String

Parameters

fieldName name of the field to read

Returns: value of type std::string*. Refer to the class description for how to free the return value.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readStringArray()

virtual std::vector< std::string > apache::geode::client::PdxReader::readStringArray ( const std::string & fieldName )

pure virtual

Read a array of strings from the PdxReader.

C++ std::vector<std::string> is mapped to Java String[].

Parameters

fieldName name of the field to read

Returns: value of type std::vector<std::string>. Refer to the class description for how to free the return value.

Exceptions

IllegalStateException if PdxReader doesn't have the named field.

See also: PdxReader::hasField

◆ readUnreadFields()

virtual std::shared_ptr< PdxUnreadFields > apache::geode::client::PdxReader::readUnreadFields ( )

pure virtual

This method returns an object that represents all the unread fields which must be passed to PdxWriter#writeUnreadFields in the toData code.

Note that if CacheFactory#setPdxIgnoreUnreadFields is set to true then this method will always return an object that has no unread fields.

Returns: an object that represents the unread fields.

VMware GemFire Native Client C++ API Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ PdxReader()

◆ ~PdxReader()

Member Function Documentation

◆ hasField()

◆ isIdentityField()

◆ readArrayOfByteArrays()

◆ readBoolean()

◆ readBooleanArray()

◆ readByte()

◆ readByteArray()

◆ readChar()

◆ readCharArray()

◆ readDate()

◆ readDouble()

◆ readDoubleArray()

◆ readFloat()

◆ readFloatArray()

◆ readInt()

◆ readIntArray()

◆ readLong()

◆ readLongArray()

◆ readObject()

◆ readObjectArray()

◆ readShort()

◆ readShortArray()

◆ readString()

◆ readStringArray()

◆ readUnreadFields()