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Diffstat (limited to 'ndb/include/kernel/AttributeHeader.hpp')
| -rw-r--r-- | ndb/include/kernel/AttributeHeader.hpp | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/ndb/include/kernel/AttributeHeader.hpp b/ndb/include/kernel/AttributeHeader.hpp deleted file mode 100644 index 3cb432067eb..00000000000 --- a/ndb/include/kernel/AttributeHeader.hpp +++ /dev/null @@ -1,215 +0,0 @@ -/* Copyright (C) 2003 MySQL AB - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -#ifndef ATTRIBUTE_HEADER -#define ATTRIBUTE_HEADER - -/** - * @class AttributeHeader - * @brief Header passed in front of every attribute value in AttrInfo signal - */ -class AttributeHeader { - friend class Dbtup; - friend class Backup; - friend class NdbOperation; - friend class DbUtil; - friend class Suma; - -public: - /** - * Psuedo columns - */ - STATIC_CONST( PSUEDO = 0x8000 ); - STATIC_CONST( FRAGMENT = 0xFFFE ); // Read fragment no - STATIC_CONST( ROW_COUNT = 0xFFFD ); // Read row count (committed) - STATIC_CONST( COMMIT_COUNT = 0xFFFC ); // Read commit count - STATIC_CONST( RANGE_NO = 0xFFFB ); // Read range no (when batched ranges) - - STATIC_CONST( ROW_SIZE = 0xFFFA ); - STATIC_CONST( FRAGMENT_MEMORY= 0xFFF9 ); - - /** Initialize AttributeHeader at location aHeaderPtr */ - static AttributeHeader& init(void* aHeaderPtr, Uint32 anAttributeId, - Uint32 aDataSize); - - /** Returns size of AttributeHeader (usually one or two words) */ - Uint32 getHeaderSize() const; // In 32-bit words - - /** Store AttributeHeader in location given as argument */ - void insertHeader(Uint32*); - - /** Get next attribute header (if there is one) */ - AttributeHeader* getNext() const; - - /** Get location of attribute value */ - Uint32* getDataPtr() const; - - /** Getters and Setters */ - Uint32 getAttributeId() const; - void setAttributeId(Uint32); - Uint32 getDataSize() const; // In 32-bit words - void setDataSize(Uint32); - bool isNULL() const; - void setNULL(); - - /** Print **/ - //void print(NdbOut&); - void print(FILE*); - - static Uint32 getDataSize(Uint32); - -public: - AttributeHeader(Uint32 = 0); - AttributeHeader(Uint32 anAttributeId, Uint32 aDataSize); - ~AttributeHeader(); - - Uint32 m_value; -}; - -/** - * 1111111111222222222233 - * 01234567890123456789012345678901 - * ssssssssssssss eiiiiiiiiiiiiiiii - * - * i = Attribute Id - * s = Size of current "chunk" - 14 Bits -> 16384 (words) = 65k - * Including optional extra word(s). - * e - Element data/Blob, read element of array - * If == 0 next data word contains attribute value. - * If == 1 next data word contains: - * For Array of Fixed size Elements - * Start Index (16 bit), Stop Index(16 bit) - * For Blob - * Start offset (32 bit) (length is defined in previous word) - * - * An attribute value equal to "null" is represented by setting s == 0. - * - * Bit 14 is not yet used. - */ - -inline -AttributeHeader& AttributeHeader::init(void* aHeaderPtr, Uint32 anAttributeId, - Uint32 aDataSize) -{ - return * new (aHeaderPtr) AttributeHeader(anAttributeId, aDataSize); -} - -inline -AttributeHeader::AttributeHeader(Uint32 aHeader) -{ - m_value = aHeader; -} - -inline -AttributeHeader::AttributeHeader(Uint32 anAttributeId, Uint32 aDataSize) -{ - m_value = 0; - this->setAttributeId(anAttributeId); - this->setDataSize(aDataSize); -} - -inline -AttributeHeader::~AttributeHeader() -{} - -inline -Uint32 AttributeHeader::getHeaderSize() const -{ - // Should check 'e' bit here - return 1; -} - -inline -Uint32 AttributeHeader::getAttributeId() const -{ - return (m_value & 0xFFFF0000) >> 16; -} - -inline -void AttributeHeader::setAttributeId(Uint32 anAttributeId) -{ - m_value &= 0x0000FFFF; // Clear attribute id - m_value |= (anAttributeId << 16); -} - -inline -Uint32 AttributeHeader::getDataSize() const -{ - return (m_value & 0x3FFF); -} - -inline -void AttributeHeader::setDataSize(Uint32 aDataSize) -{ - m_value &= (~0x3FFF); - m_value |= aDataSize; -} - -inline -bool AttributeHeader::isNULL() const -{ - return (getDataSize() == 0); -} - -inline -void AttributeHeader::setNULL() -{ - setDataSize(0); -} - -inline -Uint32* AttributeHeader::getDataPtr() const -{ - return (Uint32*)&m_value + getHeaderSize(); -} - -inline -void AttributeHeader::insertHeader(Uint32* target) -{ - *target = m_value; -} - -inline -AttributeHeader* -AttributeHeader::getNext() const { - return (AttributeHeader*)(getDataPtr() + getDataSize()); -} - -inline -void -//AttributeHeader::print(NdbOut& output) { -AttributeHeader::print(FILE* output) { - fprintf(output, "AttributeId: H\'%.8x (D\'%d), DataSize: H\'%.8x (D\'%d), " - "isNULL: %d\n", - getAttributeId(), getAttributeId(), - getDataSize(), getDataSize(), - isNULL()); -} - -inline -Uint32 -AttributeHeader::getDataSize(Uint32 m_value){ - return (m_value & 0x3FFF); -} - -#endif - - - - - - - |