public static SqlStatement Alter(PlSqlParser.AlterUserStatementContext context)
{
var userName = context.userName().GetText();
var actions = new List<IAlterUserAction>();
foreach (var actionContext in context.alterUserAction()) {
if (actionContext.alterUserIdAction() != null) {
actions.Add(SetPassword(actionContext.alterUserIdAction()));
} else if (actionContext.setAccountAction() != null) {
actions.Add(SetAccount(actionContext.setAccountAction()));
} else if (actionContext.setRoleAction() != null) {
actions.Add(SetRole(actionContext.setRoleAction()));
}
}
if (actions.Count == 1)
return new AlterUserStatement(userName, actions[0]);
var seq = new SequenceOfStatements();
foreach (var action in actions) {
seq.Statements.Add(new AlterUserStatement(userName, action));
}
return seq;
}
public static SqlStatement Build(PlSqlParser.CreateTableStatementContext context)
{
var tableName = Name.Object(context.objectName());
var columnOrConstraints = context.columnOrConstraintList().columnOrConstraint();
bool ifNotExists = context.IF() != null && context.NOT() != null && context.EXISTS() != null;
bool temporary = context.TEMPORARY() != null;
var tableColumns = new List<SqlTableColumn>();
var tableConstraints = new List<SqlTableConstraint>();
var columnConstraints = new List<ColumnConstraint>();
foreach (var columnOrConstraint in columnOrConstraints) {
if (columnOrConstraint.tableColumn() != null) {
tableColumns.Add(TableColumn.Form(columnOrConstraint.tableColumn(), columnConstraints));
} else if (columnOrConstraint.tableConstraint() != null) {
tableConstraints.Add(TableConstraint.Form(columnOrConstraint.tableConstraint()));
}
}
if (columnConstraints.Count > 0) {
var constraintGroups = columnConstraints.GroupBy(x => x.Type);
foreach (var constraintGroup in constraintGroups) {
var columnNames = constraintGroup.Select(x => x.ColumnName).ToArray();
var index = tableConstraints.FindIndex(x => String.IsNullOrEmpty(x.ConstraintName) &&
x.ConstraintType == constraintGroup.Key);
if (index != -1) {
var unnamedConstraint = tableConstraints[index];
var columns = new List<string>(unnamedConstraint.Columns);
foreach (var columnName in columnNames) {
if (!columns.Contains(columnName))
columns.Add(columnName);
}
// TODO: set the new columns
} else {
tableConstraints.Add(new SqlTableConstraint(constraintGroup.Key, columnNames));
}
}
}
var block = new SequenceOfStatements();
block.Statements.Add(new CreateTableStatement(tableName, tableColumns) {
IfNotExists = ifNotExists,
Temporary = temporary
});
foreach (var constraint in tableConstraints) {
block.Statements.Add(new AlterTableStatement(tableName, new AddConstraintAction(constraint)));
}
return block;
}
public static SqlStatement Drop(PlSqlParser.DropSequenceStatementContext context)
{
var names = context.objectName().Select(Name.Object).ToArray();
var ifExists = context.IF() != null && context.EXISTS() != null;
if (names.Length == 1)
return new DropSequenceStatement(names[0]);
var sequence = new SequenceOfStatements();
foreach (var name in names) {
sequence.Statements.Add(new DropSequenceStatement(name));
}
return sequence;
}
public static SqlStatement Build(PlSqlParser.DropTableStatementContext context)
{
var tableNames = context.objectName().Select(Name.Object).ToArray();
bool ifExists = context.IF() != null && context.EXISTS() != null;
if (tableNames.Length == 1)
return new DropTableStatement(tableNames[0], ifExists);
var list = new SequenceOfStatements();
foreach (var tableName in tableNames) {
list.Statements.Add(new DropTableStatement(tableName, ifExists));
}
return list;
}
public static SqlStatement Build(PlSqlParser.AlterTableStatementContext context)
{
var tableName = Name.Object(context.objectName());
var actions = context.alterTableAction().Select(ActionBuilder.Build).ToArray();
if (actions.Length == 1)
return new AlterTableStatement(tableName, actions[0]);
var list = new SequenceOfStatements();
foreach (var action in actions) {
list.Statements.Add(new AlterTableStatement(tableName, action));
}
return list;
}
