com.scalar.db.sql.statement.DropIndexStatement Maven / Gradle / Ivy
package com.scalar.db.sql.statement;
import com.scalar.db.sql.TableRef;
import java.util.Objects;
import javax.annotation.concurrent.Immutable;
@Immutable
public class DropIndexStatement
implements DdlStatement, NamespaceNameOmittable {
public final TableRef table;
public final String columnName;
public final boolean ifExists;
private DropIndexStatement(TableRef table, String columnName, boolean ifExists) {
this.table = Objects.requireNonNull(table);
this.columnName = Objects.requireNonNull(columnName);
this.ifExists = ifExists;
}
@Override
public String toSql() {
StringBuilder builder = new StringBuilder("DROP INDEX ");
if (ifExists) {
builder.append("IF EXISTS ");
}
builder.append("ON ");
StatementUtils.appendTable(builder, table);
builder.append('(');
StatementUtils.appendObjectName(builder, columnName);
return builder.append(')').toString();
}
@Override
public R accept(StatementVisitor visitor, C context) {
return visitor.visit(this, context);
}
@Override
public R accept(DdlStatementVisitor visitor, C context) {
return visitor.visit(this, context);
}
@Override
public boolean namespaceNameOmitted() {
return table.namespaceName == null;
}
@Override
public DropIndexStatement setNamespaceNameIfOmitted(String namespaceName) {
if (namespaceNameOmitted()) {
return create(TableRef.of(namespaceName, table.tableName), columnName, ifExists);
}
return this;
}
@Override
public String toString() {
return toSql();
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof DropIndexStatement)) {
return false;
}
DropIndexStatement that = (DropIndexStatement) o;
return ifExists == that.ifExists
&& Objects.equals(table, that.table)
&& Objects.equals(columnName, that.columnName);
}
@Override
public int hashCode() {
return Objects.hash(table, columnName, ifExists);
}
public static DropIndexStatement create(TableRef table, String columnName, boolean ifExists) {
return new DropIndexStatement(table, columnName, ifExists);
}
}