org.rocksdb.MutableOptionValue Maven / Gradle / Ivy
// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
package org.rocksdb;
import static org.rocksdb.AbstractMutableOptions.INT_ARRAY_INT_SEPARATOR;
public abstract class MutableOptionValue {
abstract double asDouble() throws NumberFormatException;
abstract long asLong() throws NumberFormatException;
abstract int asInt() throws NumberFormatException;
abstract boolean asBoolean() throws IllegalStateException;
abstract int[] asIntArray() throws IllegalStateException;
abstract String asString();
abstract T asObject();
private static abstract class MutableOptionValueObject extends MutableOptionValue {
protected final T value;
protected MutableOptionValueObject(final T value) {
this.value = value;
}
@Override T asObject() {
return value;
}
}
static MutableOptionValue fromString(final String s) {
return new MutableOptionStringValue(s);
}
static MutableOptionValue fromDouble(final double d) {
return new MutableOptionDoubleValue(d);
}
static MutableOptionValue fromLong(final long d) {
return new MutableOptionLongValue(d);
}
static MutableOptionValue fromInt(final int i) {
return new MutableOptionIntValue(i);
}
static MutableOptionValue fromBoolean(final boolean b) {
return new MutableOptionBooleanValue(b);
}
static MutableOptionValue fromIntArray(final int[] ix) {
return new MutableOptionIntArrayValue(ix);
}
static > MutableOptionValue fromEnum(final N value) {
return new MutableOptionEnumValue<>(value);
}
static class MutableOptionStringValue
extends MutableOptionValueObject {
MutableOptionStringValue(final String value) {
super(value);
}
@Override
double asDouble() throws NumberFormatException {
return Double.parseDouble(value);
}
@Override
long asLong() throws NumberFormatException {
return Long.parseLong(value);
}
@Override
int asInt() throws NumberFormatException {
return Integer.parseInt(value);
}
@Override
boolean asBoolean() throws IllegalStateException {
return Boolean.parseBoolean(value);
}
@Override
int[] asIntArray() throws IllegalStateException {
throw new IllegalStateException("String is not applicable as int[]");
}
@Override
String asString() {
return value;
}
}
static class MutableOptionDoubleValue
extends MutableOptionValue {
private final double value;
MutableOptionDoubleValue(final double value) {
this.value = value;
}
@Override
double asDouble() {
return value;
}
@Override
long asLong() throws NumberFormatException {
return Double.valueOf(value).longValue();
}
@Override
int asInt() throws NumberFormatException {
if(value > Integer.MAX_VALUE || value < Integer.MIN_VALUE) {
throw new NumberFormatException(
"double value lies outside the bounds of int");
}
return Double.valueOf(value).intValue();
}
@Override
boolean asBoolean() throws IllegalStateException {
throw new IllegalStateException(
"double is not applicable as boolean");
}
@Override
int[] asIntArray() throws IllegalStateException {
if(value > Integer.MAX_VALUE || value < Integer.MIN_VALUE) {
throw new NumberFormatException(
"double value lies outside the bounds of int");
}
return new int[] { Double.valueOf(value).intValue() };
}
@Override
String asString() {
return String.valueOf(value);
}
@Override
Double asObject() {
return value;
}
}
static class MutableOptionLongValue
extends MutableOptionValue {
private final long value;
MutableOptionLongValue(final long value) {
this.value = value;
}
@Override
double asDouble() {
return Long.valueOf(value).doubleValue();
}
@Override
long asLong() throws NumberFormatException {
return value;
}
@Override
int asInt() throws NumberFormatException {
if(value > Integer.MAX_VALUE || value < Integer.MIN_VALUE) {
throw new NumberFormatException(
"long value lies outside the bounds of int");
}
return Long.valueOf(value).intValue();
}
@Override
boolean asBoolean() throws IllegalStateException {
throw new IllegalStateException(
"long is not applicable as boolean");
}
@Override
int[] asIntArray() throws IllegalStateException {
if(value > Integer.MAX_VALUE || value < Integer.MIN_VALUE) {
throw new NumberFormatException(
"long value lies outside the bounds of int");
}
return new int[] { Long.valueOf(value).intValue() };
}
@Override
String asString() {
return String.valueOf(value);
}
@Override
Long asObject() {
return value;
}
}
static class MutableOptionIntValue
extends MutableOptionValue {
private final int value;
MutableOptionIntValue(final int value) {
this.value = value;
}
@Override
double asDouble() {
return Integer.valueOf(value).doubleValue();
}
@Override
long asLong() throws NumberFormatException {
return value;
}
@Override
int asInt() throws NumberFormatException {
return value;
}
@Override
boolean asBoolean() throws IllegalStateException {
throw new IllegalStateException("int is not applicable as boolean");
}
@Override
int[] asIntArray() throws IllegalStateException {
return new int[] { value };
}
@Override
String asString() {
return String.valueOf(value);
}
@Override
Integer asObject() {
return value;
}
}
static class MutableOptionBooleanValue
extends MutableOptionValue {
private final boolean value;
MutableOptionBooleanValue(final boolean value) {
this.value = value;
}
@Override
double asDouble() {
throw new NumberFormatException("boolean is not applicable as double");
}
@Override
long asLong() throws NumberFormatException {
throw new NumberFormatException("boolean is not applicable as Long");
}
@Override
int asInt() throws NumberFormatException {
throw new NumberFormatException("boolean is not applicable as int");
}
@Override
boolean asBoolean() {
return value;
}
@Override
int[] asIntArray() throws IllegalStateException {
throw new IllegalStateException("boolean is not applicable as int[]");
}
@Override
String asString() {
return String.valueOf(value);
}
@Override
Boolean asObject() {
return value;
}
}
static class MutableOptionIntArrayValue
extends MutableOptionValueObject {
MutableOptionIntArrayValue(final int[] value) {
super(value);
}
@Override
double asDouble() {
throw new NumberFormatException("int[] is not applicable as double");
}
@Override
long asLong() throws NumberFormatException {
throw new NumberFormatException("int[] is not applicable as Long");
}
@Override
int asInt() throws NumberFormatException {
throw new NumberFormatException("int[] is not applicable as int");
}
@Override
boolean asBoolean() {
throw new NumberFormatException("int[] is not applicable as boolean");
}
@Override
int[] asIntArray() throws IllegalStateException {
return value;
}
@Override
String asString() {
final StringBuilder builder = new StringBuilder();
for(int i = 0; i < value.length; i++) {
builder.append(value[i]);
if(i + 1 < value.length) {
builder.append(INT_ARRAY_INT_SEPARATOR);
}
}
return builder.toString();
}
}
static class MutableOptionEnumValue>
extends MutableOptionValueObject {
MutableOptionEnumValue(final T value) {
super(value);
}
@Override
double asDouble() throws NumberFormatException {
throw new NumberFormatException("Enum is not applicable as double");
}
@Override
long asLong() throws NumberFormatException {
throw new NumberFormatException("Enum is not applicable as long");
}
@Override
int asInt() throws NumberFormatException {
throw new NumberFormatException("Enum is not applicable as int");
}
@Override
boolean asBoolean() throws IllegalStateException {
throw new NumberFormatException("Enum is not applicable as boolean");
}
@Override
int[] asIntArray() throws IllegalStateException {
throw new NumberFormatException("Enum is not applicable as int[]");
}
@Override
String asString() {
return value.name();
}
}
}