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package Generator.Node;

import Generator.Element.Column;

import Generator.Element.Table;

import Generator.Element.SQLType;

import java.util.ArrayList;

import java.util.List;

public class Scope {

Scope parent;

List<Table> tables;

List<Table> columns;

int seq;

public Scope(Scope parent) {

this.parent = parent;

if(parent!=null){

tables = parent.tables;

columns = parent.columns;

seq = parent.seq;

}else{

this.columns = new ArrayList<>();

this.tables = new ArrayList<>();

this.seq = 1;

}

}

public List<Table> getTables() {

return tables;

}

public List<Table> getColumns() {

return columns;

}

public List<Object[]> columnOfType(SQLType sqlType){

List<Object[]> result = new ArrayList<>();

for(Table table : columns){

for(Column column : table.getColumns()){

if(column.getSqlType()==sqlType){

Object[] cur = new Object[2];

cur[0] = table;

cur[1] = column;

result.add(cur);

}

}

}

return result;

}

public String aliasGenerate(String prefix){

String result =prefix + String.valueOf(seq++);

return result;

}

public static void copyScope(Scope scope, Scope curScope){

curScope.parent = scope.parent;

curScope.tables = new ArrayList<>(scope.getTables());

curScope.columns = new ArrayList<>(scope.getColumns());

curScope.seq = scope.seq;

}

public int getSeq() {

return seq;

}

public void setSeq(int seq) {

this.seq = seq;

}

}