net.java.ao.schema.ddl.SQLAction Maven / Gradle / Ivy

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There is a newer version: 6.1.1

package net.java.ao.schema.ddl;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * An SQL statement representing some stage of schema modification.
 * This may optionally have a corresponding "undo" action which can be executed to roll
 * back this modification; this will only be done if the modification succeeded but then
 * some later action failed.
 */
public final class SQLAction
{
    private final String statement;
    private final SQLAction undoAction;
    
    private SQLAction(String statement, SQLAction undoAction)
    {
        this.statement = checkNotNull(statement);
        this.undoAction = undoAction;
    }
    
    public static SQLAction of(CharSequence statement)
    {
        return new SQLAction(statement.toString(), null);
    }
    
    public SQLAction withUndoAction(SQLAction undoAction)
    {
        return new SQLAction(this.statement, undoAction);
    }
    
    public String getStatement()
    {
        return statement;
    }
    
    public SQLAction getUndoAction()
    {
        return undoAction;
    }
}