net.sf.jsqlparser.statement.alter.AlterSystemStatement Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jsqlparser Show documentation

JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern.

The newest version!

/*-
 * #%L
 * JSQLParser library
 * %%
 * Copyright (C) 2004 - 2021 JSQLParser
 * %%
 * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
 * #L%
 */
package net.sf.jsqlparser.statement.alter;

import java.util.List;
import java.util.Objects;

import net.sf.jsqlparser.statement.Statement;
import net.sf.jsqlparser.statement.StatementVisitor;

/**
 * @author Andreas Reichel
 * @see ALTER
 *      SESSION
 */

public class AlterSystemStatement implements Statement {
    private final AlterSystemOperation operation;
    private final List parameters;

    public AlterSystemStatement(AlterSystemOperation operation, List parameters) {
        this.operation =
                Objects.requireNonNull(operation, "The ALTER SYSTEM Operation must not be Null");
        this.parameters = Objects.requireNonNull(parameters,
                "The PARAMETERS List must not be null although it can be empty.");
    }

    private static void appendParameters(StringBuilder builder, List parameters) {
        for (String s : parameters) {
            builder.append(" ").append(s);
        }
    }

    public AlterSystemOperation getOperation() {
        return operation;
    }

    public List getParameters() {
        return parameters;
    }

    @Override
    public  T accept(StatementVisitor statementVisitor, S context) {
        return statementVisitor.visit(this, context);
    }

    public StringBuilder appendTo(StringBuilder builder) {
        builder.append("ALTER SYSTEM ").append(operation);
        appendParameters(builder, parameters);
        return builder;
    }

    @Override
    public String toString() {
        return appendTo(new StringBuilder()).toString();
    }

}