badgerdb::Updates Class Reference

The class encapsulating the insert and delete operators. More...

#include <updates.h>

List of all members.

Static Public Member Functions
static void	Insert (const std::string &relation, int attrCnt, const attrInfo attrList[])

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Detailed Description

The class encapsulating the insert and delete operators.

Definition at line 16 of file updates.h.

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Member Function Documentation

void badgerdb::Updates::Insert	(	const std::string &	relation,
		int	attrCnt,
		const attrInfo	attrList[]
	)		[static]

The insert operator. Get Attribute information for the relation from attribute catalog. For every indexed attribute create a Index object. Make a record using attrOffset and attrLen values obtained from attribute catalog. Insert that record into the relation file. Add entries corresponding to this new record in every new relation.

Definition at line 22 of file updates.cpp.

{
  int i;
  /*for(i = 0 ; i < attrCnt; i++){
    std::cout<<"\nattrList["<<i<<"]";
    Helpers::printAttrInfo(&attrList[i]);
  }
  std::cout<<"\nRelation: "<<relation;
   */
  RelDesc rd;
  AttrDesc *attrs;
  int attrCntReal;
  std::string s1, s2;
  relCat->getInfo(relation, rd);
  // get attribute data
  attrCat->getRelInfo(rd.relName, attrCntReal, attrs);
  if(attrCntReal != attrCnt){//checks to make sure correct number of attributes
    return;
  }
  int projToAttrMap[attrCntReal];
  for(i = 0; i < attrCntReal; i++){//gets correct order of attributes,

    s1 = attrList[i].attrName;
    for(int j = 0; j < attrCntReal; j++){
      s2 = attrs[j].attrName;
      if(s1.compare(s2) == 0){
        projToAttrMap[i] =j;
        break;
      }
    }
  }

  int length;
  Datatype type;
  RecordId insertRecId;


  for(i = 0; i< attrCntReal; i++){
      if(attrs[i].indexed ==1){//if attribute is indexed, create index object(should already be created)
    Index attrobject(rd.relName, attrs[i].attrOffset, length , type, 1, bufMgr);
    attrobject.insertEntry(attrList[i].attrValue, insertRecId);
  }

  }





}

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The documentation for this class was generated from the following files:

• /afs/cs.wisc.edu/u/n/w/nwilliam/private/workspace/Quut/src/updates.h
• /afs/cs.wisc.edu/u/n/w/nwilliam/private/workspace/Quut/src/updates.cpp