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hk_firebirdtable.cpp
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// ****************************************************************************
// copyright (c) 2000-2005 Horst Knorr <[email protected]>
// This file is part of the hk_firebirdclasses library.
// This file may be distributed and/or modified under the terms of the
// GNU Library Public License version 2 as published by the Free Software
// Foundation and appearing in the file COPYING included in the
// packaging of this file.
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
// ****************************************************************************
//$Revision: 1.14 $
#include "hk_firebirdtable.h"
#include "hk_firebirddatabase.h"
#include "hk_firebirdcolumn.h"
#include "hk_actionquery.h"
#include "hk_connection.h"
hk_firebirdtable::hk_firebirdtable(hk_firebirddatabase* db,hk_presentation* p):hk_firebirddatasource(db,p)
{
p_tempdatasource=database()->new_resultquery();
p_fieldset=false;
}
hk_firebirdtable::~hk_firebirdtable()
{
}
hk_datasource::enum_datasourcetypes hk_firebirdtable::type() const
{
return ds_table;
}
list<hk_column*>* hk_firebirdtable::driver_specific_columns(void)
{
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::driver_specific_columns");
#endif
hk_string s="select RDB$RELATION_FIELDS.RDB$FIELD_NAME as FIELDNAME, RDB$FIELDS.RDB$FIELD_TYPE as FIELDTYPE, \
RDB$FIELDS.RDB$FIELD_SUB_TYPE as SUBTYPE, \
RDB$FIELDS.RDB$FIELD_LENGTH as \"SIZE\", \
RDB$FIELDS.RDB$CHARACTER_LENGTH as \"CHARSIZE\", \
RDB$RELATION_FIELDS.RDB$NULL_FLAG as IS_NULLABLE, \
RDB$RELATION_FIELDS.RDB$FIELD_POSITION as \"POSITION\", \
RDB$RELATION_FIELDS.RDB$SYSTEM_FLAG as \"SYSTEMFLAG\" \
from RDB$RELATION_FIELDS, RDB$FIELDS \
WHERE RDB$FIELD_SOURCE=RDB$FIELDS.RDB$FIELD_NAME \
AND RDB$RELATION_NAME='"+name()+"' ORDER BY RDB$RELATION_FIELDS.RDB$FIELD_POSITION";
p_tempdatasource->set_sql(s);
if (!p_columns)
{
p_tempdatasource->enable();
hk_column* fieldname=p_tempdatasource->column_by_name("FIELDNAME");
hk_column* fieldtype=p_tempdatasource->column_by_name("FIELDTYPE");
hk_column* fieldsubtype=p_tempdatasource->column_by_name("SUBTYPE");
hk_column* fieldnullable=p_tempdatasource->column_by_name("IS_NULLABLE");
hk_column* systemfield=p_tempdatasource->column_by_name("SYSTEMFLAG");
hk_column* sizefield=p_tempdatasource->column_by_name("SIZE");
if (!fieldname ||!fieldtype ||!fieldsubtype || !fieldnullable ||!systemfield ||!sizefield)
{
cerr <<"fieldname "<<fieldname
<<" fieldtype "<<fieldtype
<<" fieldsubtype "<<fieldsubtype
<<" fieldnullable "<<fieldnullable
<<" systemfield "<<systemfield
<<" sizefield "<<sizefield
<<endl;
cerr<<"hk_firebirdtable::driver_specific_columns system error: Could not load system columns!"<<endl;
p_tempdatasource->disable();
return p_columns;
}
p_columns=new list<hk_column*>;
if (!p_columns||name().size()==0)return p_columns;
unsigned int z=0;
while ( (z <p_tempdatasource->max_rows() ) )
{
hk_firebirdcolumn* col= new hk_firebirdcolumn(this,p_true,p_false);
col->set_fieldnumber(z);
col->set_name(trim(fieldname->asstring()));
hk_column::enum_columntype coltype=hk_column::othercolumn;
long int ft=fieldtype->asinteger();
//cerr <<"COLNAME="<<fieldname->asstring()<<" TYPE="<<ft<<endl;
switch (ft)
{
case 7 : {
coltype=hk_column::smallintegercolumn;
break;
}
case 8 :
case 16: {
coltype=hk_column::integercolumn;
break;
}
case 12 : {
coltype=hk_column::datecolumn;
break;
}
case 13 : {
coltype=hk_column::timecolumn;
break;
}
case 14 :
case 37 : {
coltype=hk_column::textcolumn;
if (database()->connection()->booleanemulation()&&sizefield->asinteger()==1)
coltype=hk_column::boolcolumn;
break;
}
case 10 : {
coltype=hk_column::smallfloatingcolumn;
break;
}
case 27 : {
coltype=hk_column::floatingcolumn;
break;
}
case 35 : {
coltype=hk_column::timestampcolumn;
break;
}
case 261 : {
if (fieldsubtype->asinteger()==1)
coltype=hk_column::memocolumn;
else
coltype=hk_column::binarycolumn;
break;
}
default:;
}
col->set_columntype(coltype);
col->set_size(sizefield->asinteger());
p_columns->insert(p_columns->end(),col);
p_tempdatasource->goto_next();z++;
}
}
if (!p_fieldset)
{
if (!p_tempdatasource->is_enabled()) p_tempdatasource->enable();
hk_column* fieldname=p_tempdatasource->column_by_name("FIELDNAME");
hk_column* fieldtype=p_tempdatasource->column_by_name("FIELDTYPE");
hk_column* fieldsubtype=p_tempdatasource->column_by_name("SUBTYPE");
hk_column* fieldnullable=p_tempdatasource->column_by_name("IS_NULLABLE");
hk_column* systemfield=p_tempdatasource->column_by_name("SYSTEMFLAG");
hk_column* sizefield=p_tempdatasource->column_by_name("SIZE");
if (!fieldname ||!fieldtype ||!fieldsubtype || !fieldnullable ||!systemfield ||!sizefield)
{
cerr <<"fieldname "<<fieldname
<<" fieldtype "<<fieldtype
<<" fieldsubtype "<<fieldsubtype
<<" fieldnullable "<<fieldnullable
<<" systemfield "<<systemfield
<<" sizefield "<<sizefield
<<endl;
cerr<<"hk_firebirdtable::driver_specific_columns system error: Could not load system columns for table '"+name()+"!"<<endl;
p_tempdatasource->disable();
return p_columns;
}
p_tempdatasource->goto_first();
unsigned long m=p_tempdatasource->max_rows();
for (unsigned long i=0;i<m;i++)
{
hk_column* c=NULL;
list<hk_column*>::iterator it;
it=p_columns->begin();
hk_string searchname=trim(fieldname->asstring());
while ( it!=p_columns->end())
{
hk_column* xc=*it;
++it;
if (xc->name()==searchname) c=xc;
}
if (c)
{
c->set_notnull(fieldnullable->asinteger()==1);
}
else
{
show_warningmessage("Column: '"+trim(fieldname->asstring()+"' not found"));
}
p_tempdatasource->goto_next();
}
// now check for auto_inc
p_tempdatasource->disable();
s="SELECT RDB$TRIGGER_SOURCE AS DEFINITION FROM RDB$TRIGGERS WHERE RDB$TRIGGER_TYPE=1 AND RDB$RELATION_NAME ='"+name()+"'";
p_tempdatasource->set_sql(s);
p_tempdatasource->enable();
hk_column* triggerdef=p_tempdatasource->column_by_name("DEFINITION");
if (!triggerdef)
{
show_warningmessage("hk_firebirdtable::driver_specific_columns system error: Could not load trigger system column!");
p_tempdatasource->disable();
return p_columns;
}
unsigned long z=0;
while ( (z <p_tempdatasource->max_rows() ) )
{
hk_string generator, column;
//cerr <<"Suche in: "<<triggerdef->asstring()<<endl<<endl;
if (parse_for_generatorname(triggerdef->asstring(),generator,column))
{
z=p_tempdatasource->max_rows();
//cerr <<"gefundener generator="<<generator<<" Spalte: "<<column<<endl;
hk_firebirdcolumn* c=NULL;
list<hk_column*>::iterator it;
it=p_columns->begin();
hk_string searchname=trim(column);
while ( it!=p_columns->end())
{
hk_column* xc=*it;
++it;
if (xc->name()==searchname) c=dynamic_cast<hk_firebirdcolumn*>(xc);
}
if (c)
{
c->p_generatorname=generator;
c->set_columntype(hk_column::auto_inccolumn);
}
}
else
{
// cerr <<"kein generator"<<endl;
}
p_tempdatasource->goto_next();
++z;
}
// now check for primary key
p_tempdatasource->disable();
s="SELECT C.RDB$CONSTRAINT_NAME AS NAME, \
F.RDB$FIELD_NAME AS FIELD \
FROM RDB$RELATION_CONSTRAINTS C, RDB$INDICES I, RDB$INDEX_SEGMENTS F \
WHERE C.RDB$CONSTRAINT_TYPE='PRIMARY KEY' AND C.RDB$INDEX_NAME=I.RDB$INDEX_NAME \
AND I.RDB$INDEX_NAME=F.RDB$INDEX_NAME AND C.RDB$RELATION_NAME='"+name()+"'";
p_tempdatasource->set_sql(s);
p_tempdatasource->enable();
hk_column* keyname=p_tempdatasource->column_by_name("NAME");
hk_column* keyfield=p_tempdatasource->column_by_name("FIELD");
if (!keyname ||!keyfield)
{
cerr <<"keyname "<<keyname
<<" keyfield "<<keyfield
<<endl;
show_warningmessage("hk_firebirdtable::driver_specific_columns system error: Could not load primary system columns!");
p_tempdatasource->disable();
return p_columns;
}
m=p_tempdatasource->max_rows();
for (unsigned long i=0;i<m;i++)
{ if (i==0) p_primary_key_name=trim(keyname->asstring());
hk_column* c=NULL;
list<hk_column*>::iterator it;
it=p_columns->begin();
hk_string searchname=trim(keyfield->asstring());
while ( it!=p_columns->end())
{
hk_column* xc=*it;
++it;
if (xc->name()==searchname) c=xc;
}
if (c)
{
c->set_primary(true);
p_primary_key_used=true;
}
else
{
show_warningmessage("Column: '"+trim(fieldname->asstring()+"' not found"));
}
p_tempdatasource->goto_next();
}
p_fieldset=true;
} //END p_fielset
p_tempdatasource->disable();
return p_columns;
}
bool hk_firebirdtable::driver_specific_enable(void)
{
p_fieldset=false;
return hk_firebirddatasource::driver_specific_enable();
}
list<hk_datasource::indexclass>* hk_firebirdtable::driver_specific_indices(void)
{
//return NULL; //for testing reasons !! remove later
if (p_tempdatasource==NULL)
{
return NULL;
}
p_tempdatasource->disable();
hk_string s="SELECT I.RDB$INDEX_NAME as INDEXNAME , \
I.RDB$UNIQUE_FLAG as IS_UNIQUE, S.RDB$FIELD_NAME as FIELDNAME \
FROM RDB$INDICES I, RDB$INDEX_SEGMENTS S WHERE I.RDB$INDEX_NAME=S.RDB$INDEX_NAME \
AND RDB$RELATION_NAME='"+name()+"'";
p_tempdatasource->set_sql(s);
p_tempdatasource->enable();
p_indices.erase(p_indices.begin(),p_indices.end());
unsigned long m=p_tempdatasource->max_rows();
hk_column* keyname=p_tempdatasource->column_by_name("INDEXNAME");
hk_column* fieldname=p_tempdatasource->column_by_name("FIELDNAME");
hk_column* uniquefield=p_tempdatasource->column_by_name("IS_UNIQUE");
if (!keyname ||!fieldname||!uniquefield)
{
cerr <<"keyname "<<keyname
<<" fieldname "<<fieldname
<<" uniquefield "<<uniquefield
<<endl;
show_warningmessage("hk_firebirdtable::driver_specific_indices system error: Could not load primary system columns!");
p_tempdatasource->disable();
return NULL;
}
indexclass index; //cout <<"Anzahl indices: "<<m<<endl;
hk_string indexname;
for (unsigned long i=0;i<m;i++)
{
hk_string n=trim(keyname->asstring());
if (n!=indexname && n!=p_primary_key_name)
{
indexname=trim(n);
index.name=indexname;
index.unique=uniquefield->asbool();
p_indices.insert(p_indices.end(),index);
}
p_tempdatasource->goto_next();
}
p_tempdatasource->goto_first();
for (unsigned long i=0;i<m;i++)
{
hk_string n=trim(keyname->asstring());
list<hk_datasource::indexclass>::iterator it=findindex(n);
if (it!=p_indices.end())
{
(*it).fields.insert((*it).fields.end(),fieldname->asstring());
}
p_tempdatasource->goto_next();
}
p_tempdatasource->disable();
return &p_indices;
}
list<hk_datasource::indexclass>::iterator hk_firebirdtable::findindex(const hk_string& i)
{
list<hk_datasource::indexclass>::iterator it=p_indices.begin();
while (it!=p_indices.end())
{
if ((*it).name==i)return it;
it++;
}
return p_indices.end();
}
bool hk_firebirdtable::driver_specific_create_table_now(void)
{
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::driver_specific_create_table_now");
#endif
hk_string csql="CREATE TABLE ";
primarystring="";
//csql+=replace_all(" ",name(),"_");
csql+=p_identifierdelimiter+name()+p_identifierdelimiter;
csql+=" ( ";
csql+=internal_new_fields_arguments(false);
csql+=getprimarystring(false)+" ) ";
// cout <<"hk_firebirdtable::driver_specific_create_table_now CREATE definition: "<<endl<<csql<<endl;
hk_actionquery* query= p_database->new_actionquery();
query->set_sql(csql.c_str(),csql.size());
bool result=query->execute();
// if (result) cout<<"tabelle angelegt"; else cout<<"fehler";cout <<endl;
if (result)
{
list<hk_column*>::iterator it=p_newcolumns.begin();
while (it!=p_newcolumns.end())
{
if ((*it)->columntype()==hk_column::auto_inccolumn)
create_autoinc_field((*it)->name());
++it;
}
}
delete query;
return result;
}
hk_string hk_firebirdtable::getprimarystring(bool alter)
{
if (primarystring.size()==0)return "";
hk_string key=", ";
if (alter) key+="ADD ";
key+="CONSTRAINT PK_"+name()+" PRIMARY KEY ( ";
key=key+primarystring+" )";
return key;
}
hk_string hk_firebirdtable::internal_new_fields_arguments(bool alter)
{
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::internal_new_fields_arguments");
#endif
hk_string csql;
hk_string line;
hk_string fields;
list<hk_column*>::iterator it=p_newcolumns.begin();
while (it!=p_newcolumns.end())
{
#ifdef HK_DEBUG
hkdebug("while START");
#endif
hk_string n=(*it)->name();
if (n.size()>0)
{
if (line.size()>0)line+=" , ";
if (alter) fields =" ADD "; else fields="";
fields+=((*it)->name().size()>0?p_identifierdelimiter+(*it)->name()+p_identifierdelimiter:"");
if (fields.size()==0)
{
return "";
}
fields+=" ";
fields+=field2string((*it)->columntype(),longint2string((*it)->size()<256?(*it)->size():255));
#ifdef HK_DEBUG
hkdebug("nach field2string");
#endif
if (!alter)
{
if ((*it)->columntype()==hk_column::auto_inccolumn||((*it)->is_primary()))
{
if (primarystring.size()>0)primarystring+=" , ";
primarystring+=p_identifierdelimiter+(*it)->name()+p_identifierdelimiter;
}
if (((*it)->is_notnull()||(*it)->is_primary())||(*it)->columntype()==hk_column::auto_inccolumn)
fields+=" NOT NULL ";
}
line+=fields;
}
else
{
show_warningmessage(hk_translate("Warning: Column with no name!"));
}
it++;
#ifdef HK_DEBUG
hkdebug("while ENDE");
#endif
}
csql=csql+line+p_sql_delimiter;
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::internal_new_fields_arguments ENDE");
#endif
return csql;
}
hk_string hk_firebirdtable::field2string(hk_column::enum_columntype f,const hk_string& m)
{
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::field2string");
#endif
hk_string fields;
switch (f)
{
case hk_column::auto_inccolumn : return "BIGINT";
case hk_column::integercolumn : return "BIGINT";
case hk_column::smallintegercolumn : return "SMALLINT";
case hk_column::floatingcolumn : return "DOUBLE PRECISION";
case hk_column::smallfloatingcolumn : return "FLOAT";
case hk_column::datecolumn : return "DATE";
case hk_column::timestampcolumn : return "TIMESTAMP";
case hk_column::timecolumn : return "TIME";
case hk_column::binarycolumn : return "BLOB SUB_TYPE 0";
case hk_column::memocolumn : return "BLOB SUB_TYPE 1";
case hk_column::boolcolumn : return "CHAR(1)";
case hk_column::textcolumn :
{
fields ="VARCHAR("+m+") ";
return fields;
}
default : return "VARCHAR(255)";
}
}
bool hk_firebirdtable::driver_specific_alter_table_now(void)
{
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::driver_specific_alter_table_now");
#endif
hk_string asql="ALTER TABLE ";
hk_string csql;
asql+=p_identifierdelimiter+name()+p_identifierdelimiter;
hk_string r=internal_new_fields_arguments(true);
if (r.size()>0) csql+=r;
r=internal_alter_fields_arguments();
// cout <<"primary index nach alter_fields_arguments: "<<primarystring<<endl;
if (r.size()>0)
{
if (csql.size()>0)csql=" , "+csql;
csql+=r;
}
r=internal_delete_fields_arguments();
// cout <<"primary index nach delete_fields_arguments: "<<primarystring<<endl;
if (r.size()>0)
{
if (csql.size()>0)csql+=" , ";
csql+=r;
}
csql=asql+csql;
hk_actionquery* query= p_database->new_actionquery();
if (!query) return false;
query->set_sql(csql.c_str(),csql.size());
bool result=query->execute();
if (result)
{
list<hk_column*>::iterator it=p_newcolumns.begin();
while (it!=p_newcolumns.end())
{
if ((*it)->columntype()==hk_column::auto_inccolumn)
create_autoinc_field((*it)->name());
++it;
}
list<class_altercolumns>::iterator ait=p_altercolumns.begin();
while (ait!=p_altercolumns.end())
{
hk_column*c =column_by_name((*ait).name.c_str());
if (c!=NULL)
{
if ((*ait).type==hk_column::auto_inccolumn && c->columntype()!=(*ait).type==hk_column::auto_inccolumn)
{
create_autoinc_field((*ait).name);
}
}
++ait;
}
}
delete query;
return result;
}
hk_string hk_firebirdtable::internal_alter_fields_arguments(void)
{
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::internal_alter_fields_arguments");
#endif
if (p_altercolumns.size()==0)return "";
// char* m= new char[50];
hk_string m;
hk_string result;
list<class_altercolumns>::iterator it=p_altercolumns.begin();
while (it!=p_altercolumns.end())
{
hk_column*c =column_by_name((*it).name.c_str());
if (c!=NULL)
{
if ((*it).size<0)m=longint2string((c->size()<256)?c->size():255);
else m=longint2string((*it).size);
if (result.size()>0)result+=" , ";
result+=" ALTER COLUMN ";
result+=p_identifierdelimiter+(*it).name+p_identifierdelimiter;
result+=" ";
if ((*it).newname!="HK_NULL" &&(*it).newname.size()>0 && (*it).name!=(*it).newname) result+=" TO "+p_identifierdelimiter+(*it).newname+p_identifierdelimiter;
result+=" ";
hk_column::enum_columntype newcolumntype=(*it).type;
if ((newcolumntype!=c->columntype() && newcolumntype!=hk_column::othercolumn)
||(c->size()!=(*it).size&&(*it).size>0)
)
{
if (newcolumntype==hk_column::othercolumn)newcolumntype=c->columntype();
result+=" TYPE "+field2string(newcolumntype,m);
}
if (((*it).primary||(*it).notnull)&&(*it).type!=hk_column::auto_inccolumn)
result+=" NOT NULL ";
}
it++;
}
// delete[] m;
return result;
}
hk_string hk_firebirdtable::internal_delete_fields_arguments(void)
{
#ifdef HK_DEBUG
hkdebug("hk_firebirdtable::internal_delete_fields_arguments");
#endif
if (p_deletecolumns.size()==0)return "";
hk_string result;
list<hk_string>::iterator it=p_deletecolumns.begin();
while (it!=p_deletecolumns.end())
{
if (result.size()>0) result+=" , ";
result+=" DROP ";
result+=p_identifierdelimiter+(*it)+p_identifierdelimiter;
it++;
}
return result;
}
bool hk_firebirdtable::driver_specific_create_index(const hk_string& i,bool unique, list<hk_string>& fields)
{
hk_string s="CREATE ";
s+=(unique?"UNIQUE ":"");
s+="INDEX ";
s+=p_identifierdelimiter+i+p_identifierdelimiter+" ON ";
s+=p_identifierdelimiter+name()+p_identifierdelimiter;
s+=" ( ";
hk_string f;
list<hk_string>::iterator it=fields.begin();
while (it!=fields.end())
{
if (f.size()>0)f+=" , ";
f+=p_identifierdelimiter+(*it)+p_identifierdelimiter;
it++;
}
s+=f+" )";
hk_actionquery* query= p_database->new_actionquery();
if (query==NULL) return false;
//cout <<"Create Index: "<<s<<endl;
query->set_sql(s.c_str(),s.size());
bool res =query->execute();
delete query;
return res;
}
bool hk_firebirdtable::driver_specific_drop_index(const hk_string& i)
{
hk_string s=" DROP INDEX ";
s+=p_identifierdelimiter+i+p_identifierdelimiter;
hk_actionquery* query= p_database->new_actionquery();
if (query==NULL) return false;
query->set_sql(s.c_str(),s.size());
bool res =query->execute();
delete query;
return res;
}
bool hk_firebirdtable::parse_for_generatorname(const hk_string & t, hk_string& generator, hk_string& column)
{
hk_string::size_type offset=0;
enum
{
S_START,S_IN_DOUBLEQUOTE,S_IN_QUOTE,S_IN_TAG
} state=S_START;
int row=1;
int col=1;
hk_string tag;
bool in_gen_id=false;
bool get_columnname=false;
while (offset<t.size())
{
hk_string xc(1,t[offset]);
switch (state)
{
case S_START: //cerr<<"S_START"<<endl;
tag="";
if (isspace(xc[0]))
{
if (xc=="\n")
{
++row;col=0;
}
break;
}
else
if (xc=="\"")
{
state=S_IN_DOUBLEQUOTE;
}
else
if (xc=="'")
state=S_IN_QUOTE;
else
if (xc=="(" && in_gen_id)
{
state=S_IN_TAG;
}
else
{
state=S_IN_TAG;
tag=string2upper(xc);
}
break;
case S_IN_QUOTE://cerr<<"S_IN_QUOTE"<<endl;
if (xc=="'")
{
if (in_gen_id)
{
generator=tag;
return true;
}
else
{
tag="";
state=S_START;
}
}
else
{
tag+=xc;
//cerr<<"tag=#"<<tag<<"#"<<endl;
}
break;
case S_IN_DOUBLEQUOTE://cerr<<"S_IN_DOUBLE_QUOTE"<<endl;
if (xc=="\"")
{
if (column.size()>0)
{
if (in_gen_id)
{
generator=tag;
return true;
}
}
else
{
if (get_columnname)
{
column=tag;//cerr <<"SET COLUMN="<<column<<endl;
state=S_START;
get_columnname=false;
break;
}
tag="";
state=S_START;
}
}
else
{
tag+=xc;
//cerr<<"tag=#"<<tag<<"#"<<endl;
}
break;
case S_IN_TAG://cerr<<"S_IN_TAG"<<endl;
if (xc=="." && string2upper(tag)=="NEW")
{
get_columnname=true;
//cerr <<"NEW found! get_columnname=true"<<endl;
state=S_START;
break;
}
if (xc=="(" &&string2upper(tag)=="GEN_ID")
{
in_gen_id=true;
tag="";
state=S_START;
}
if (isspace(xc[0])|| tag==",")
{
if (get_columnname)
{
column=tag;//cerr <<"SET COLUMN="<<column<<endl;
state=S_START;
get_columnname=false;
break;
}
if (column.size()>0)
{
if (in_gen_id)
{
generator=tag;
return true;
}
}
if (string2upper(tag)=="GEN_ID")
in_gen_id=true;
tag="";
state=S_START;
}
else
{
if (in_gen_id &&xc==")")
{
generator=tag;
return true;
}
else
if (in_gen_id &&xc==",")
{
generator=tag;
return true;
}
}
{
tag+=string2upper(xc);
//cerr<<"tag=#"<<tag<<"#"<<endl;
}
break;
}
++offset;++col;
} // endloop
return false;
}
void hk_firebirdtable::create_autoinc_field(const hk_string& field)
{
hk_actionquery* aq=database()->new_actionquery();
if (!aq)
{
show_warningmessage("hk_firebirdtable::create_autoinc_field Error: no actionquery!");
return;
}
p_tempdatasource->disable();
p_tempdatasource->set_sql("SELECT RDB$GENERATOR_NAME AS NAME FROM RDB$GENERATORS");
if (!p_tempdatasource->enable())
{
show_warningmessage("Error could not enable RDB$GENERATORS query!");
delete aq;
return;
}
hk_column* gname=p_tempdatasource->column_by_name("NAME");
if (! gname)
{
show_warningmessage("Could not find RDB$GENERATORS system column");
delete aq;
return;
}
int i=0;
bool newname=false;
hk_string newgenerator;
while (!newname)
{
newgenerator=name()+field+longint2string(i)+"_GEN";
newname=(gname->find(newgenerator)>p_tempdatasource->max_rows());
++i;
}
hk_string s="CREATE GENERATOR \""+newgenerator+"\"";
aq->set_sql(s.c_str(),s.size());
if (!aq->execute())
{
show_warningmessage("Warning: Generator '"+newgenerator+"' could not be created!");
}
i=0;
newname=false;
hk_string newtrigger;
while (!newname)
{
newtrigger=name()+field+longint2string(i)+"_BI";
newname=(gname->find(newtrigger)>p_tempdatasource->max_rows());
}
s="CREATE TRIGGER \""+newtrigger+"\" FOR \""+name()+"\" ACTIVE BEFORE INSERT AS\n";
hk_string nf="NEW.\""+field+"\"";
s+="BEGIN IF ("+nf+" IS NULL ) THEN "+nf+" = GEN_ID(\""+newgenerator+"\", 1); END";
aq->set_sql(s.c_str(),s.size());
if (!aq->execute())
{
show_warningmessage("Warning: Trigger '"+newtrigger+"' could not be created!");
}
delete aq;
}
void hk_firebirdtable::driver_specific_referenceslist(void)
{
hk_string foreignkeys="select C.RDB$CONSTRAINT_NAME RELNAME,C.RDB$RELATION_NAME CHILD,F.RDB$UPDATE_RULE UPDATERULE, F.RDB$DELETE_RULE DELETERULE from RDB$RELATION_CONSTRAINTS C,RDB$REF_CONSTRAINTS F WHERE C.RDB$CONSTRAINT_TYPE='FOREIGN KEY' AND C.RDB$CONSTRAINT_NAME=F.RDB$CONSTRAINT_NAME AND C.RDB$RELATION_NAME='"+name()+"'";
hk_string child="SELECT C.RDB$CONSTRAINT_NAME , C.RDB$RELATION_NAME CHILD, S1.RDB$FIELD_NAME KEYON \
FROM RDB$RELATION_CONSTRAINTS C, RDB$INDICES I1,RDB$INDEX_SEGMENTS S1 \
WHERE C.RDB$CONSTRAINT_TYPE='FOREIGN KEY' AND I1.RDB$INDEX_NAME=C.RDB$INDEX_NAME AND I1.RDB$INDEX_NAME=S1.RDB$INDEX_NAME order by S1.RDB$FIELD_POSITION ";
hk_string parent="select C.RDB$CONSTRAINT_NAME ,S2.RDB$FIELD_NAME REFERENCEDFIELD,I2.RDB$RELATION_NAME PARENT \
from RDB$RELATION_CONSTRAINTS C, RDB$INDICES I1, RDB$INDICES I2, RDB$INDEX_SEGMENTS S2 \
WHERE C.RDB$CONSTRAINT_TYPE='FOREIGN KEY' AND I1.RDB$INDEX_NAME=C.RDB$INDEX_NAME AND I2.RDB$INDEX_NAME=S2.RDB$INDEX_NAME AND I1.RDB$FOREIGN_KEY=I2.RDB$INDEX_NAME ORDER BY S2.RDB$FIELD_POSITION";
hk_datasource*fk =database()->new_resultquery();
hk_datasource*d =database()->new_resultquery();
hk_datasource*p =database()->new_resultquery();
if (!fk||!d||!p )
{
show_warningmessage("Error:hk_firebirddatasource::driver_specific_referenceslist\nNo datasource");
return;
}
fk->set_sql(foreignkeys);
d->set_sql(child);
d->set_depending_on(fk);
d->add_depending_fields("RDB$CONSTRAINT_NAME","RELNAME");
p->set_sql(parent);
p->set_depending_on(fk);
p->add_depending_fields("RDB$CONSTRAINT_NAME","RELNAME");
fk->enable();
if (fk->max_rows()==0)
{
fk->disable();
delete d;
delete p;
delete fk;
return;
}
hk_column* ref_is_on=fk->column_by_name("RELNAME");
hk_column* updaterule=fk->column_by_name("UPDATERULE");
hk_column* deleterule=fk->column_by_name("DELETERULE");
unsigned int fkpos=0;
while (fkpos<fk->max_rows()) // main while loop
{
hk_column* keyon=d->column_by_name("KEYON");
hk_column* referencedfield=p->column_by_name("REFERENCEDFIELD");
hk_column* parentname=p->column_by_name("PARENT");
if (!ref_is_on||!keyon||!referencedfield||!parentname||!updaterule||!deleterule)
{
cerr <<"ref_is_on"<<ref_is_on<<" keyon"<<keyon<<" referencedfield"<<referencedfield<<" parentname"<<parentname<<" UPDATERULE"<<updaterule<<" DELETERULE"<<deleterule<<endl;
show_warningmessage("Error:hk_firebirddatasource::driver_specific_referenceslist\nNo system table!");
return;
}
referentialclass ref;
ref.p_masterdatasource=trim(parentname->asstring());
ref.p_name=trim(ref_is_on->asstring());
//cerr <<"datasource:"<<name()<<" master:"<<ref.p_masterdatasource<<endl;
ref.p_updatecascade=(trim(updaterule->asstring())=="CASCADE");
//cerr <<"upd:"<<updaterule->asstring()<<endl;