package gudusoft.gsqlparser.nodes;

import java.util.ArrayList;

/**
 * Column identity clause.
 *
 */
public class TIdentityClause extends TParseTreeNode {

    private TExpression columnExpr;

    public TExpression getColumnExpr() {
        return columnExpr;
    }

    private ArrayList<TSequenceOption> identityOptions = null;

    public ArrayList<TSequenceOption> getIdentityOptions() {
        return identityOptions;
    }

    /**
     * Seed value for Dameng IDENTITY(seed,step) form.
     */
    private TConstant seedValue;

    public TConstant getSeedValue() {
        return seedValue;
    }

    public void setSeedValue(TConstant seedValue) {
        this.seedValue = seedValue;
    }

    /**
     * Increment (step) value for Dameng IDENTITY(seed,step) form.
     */
    private TConstant incrementValue;

    public TConstant getIncrementValue() {
        return incrementValue;
    }

    public void setIncrementValue(TConstant incrementValue) {
        this.incrementValue = incrementValue;
    }

    public void init(Object arg1){
        if (arg1 instanceof TExpression){
            columnExpr = (TExpression)arg1;
        }else{
            identityOptions = (ArrayList<TSequenceOption>)arg1;
        }

    }

    public void accept(TParseTreeVisitor v){
        v.preVisit(this);
        v.postVisit(this);
    }

    public void acceptChildren(TParseTreeVisitor v) {
        v.preVisit(this);
        if (identityOptions != null){
            for(TSequenceOption option:identityOptions){
                option.acceptChildren(v);
            }
        }
        v.postVisit(this);
    }
}