org.immutables.fixture.ImmutableSillyLazy Maven / Gradle / Ivy
package org.immutables.fixture;
import com.google.common.base.MoreObjects;
import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import javax.annotation.Generated;
import javax.annotation.Nullable;
import javax.annotation.ParametersAreNonnullByDefault;
import javax.annotation.concurrent.Immutable;
import javax.annotation.concurrent.NotThreadSafe;
/**
* Immutable implementation of {@link SillyLazy}.
*
* Use the builder to create immutable instances:
* {@code ImmutableSillyLazy.builder()}.
* Use the static factory method to create immutable instances:
* {@code ImmutableSillyLazy.of()}.
*/
@SuppressWarnings("all")
@ParametersAreNonnullByDefault
@Generated({"Immutables.generator", "SillyLazy"})
@Immutable
public final class ImmutableSillyLazy extends SillyLazy {
private final AtomicInteger counter;
private ImmutableSillyLazy(AtomicInteger counter) {
this.counter = Preconditions.checkNotNull(counter, "counter");
}
private ImmutableSillyLazy(ImmutableSillyLazy original, AtomicInteger counter) {
this.counter = counter;
}
/**
* @return The value of the {@code counter} attribute
*/
@Override
public AtomicInteger counter() {
return counter;
}
/**
* Copy the current immutable object by setting a value for the {@link SillyLazy#counter() counter} attribute.
* A shallow reference equality check is used to prevent copying of the same value by returning {@code this}.
* @param counter A new value for counter
* @return A modified copy of the {@code this} object
*/
public final ImmutableSillyLazy withCounter(AtomicInteger counter) {
if (this.counter == counter) return this;
AtomicInteger newValue = Preconditions.checkNotNull(counter, "counter");
return new ImmutableSillyLazy(this, newValue);
}
/**
* This instance is equal to all instances of {@code ImmutableSillyLazy} that have equal attribute values.
* @return {@code true} if {@code this} is equal to {@code another} instance
*/
@Override
public boolean equals(@Nullable Object another) {
if (this == another) return true;
return another instanceof ImmutableSillyLazy
&& equalTo((ImmutableSillyLazy) another);
}
private boolean equalTo(ImmutableSillyLazy another) {
return counter.equals(another.counter);
}
/**
* Computes a hash code from attributes: {@code counter}.
* @return hashCode value
*/
@Override
public int hashCode() {
int h = 31;
h = h * 17 + counter.hashCode();
return h;
}
/**
* Prints the immutable value {@code SillyLazy} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return MoreObjects.toStringHelper("SillyLazy")
.omitNullValues()
.add("counter", counter)
.toString();
}
private volatile long lazyInitBitmap;
private static final long VAL1_LAZY_INIT_BIT = 0x1L;
private int val1;
/**
* {@inheritDoc}
*
* Returns a lazily initialized value of the {@link SillyLazy#val1() val1} attribute.
* Initialized once and only once and stored for subsequent access with proper synchronization.
* @return A lazily initialized value of the {@code l.name} attribute
*/
@Override
public int val1() {
if ((lazyInitBitmap & VAL1_LAZY_INIT_BIT) == 0) {
synchronized (this) {
if ((lazyInitBitmap & VAL1_LAZY_INIT_BIT) == 0) {
this.val1 = super.val1();
lazyInitBitmap |= VAL1_LAZY_INIT_BIT;
}
}
}
return val1;
}
private static final long VAL2_LAZY_INIT_BIT = 0x2L;
private int val2;
/**
* {@inheritDoc}
*
* Returns a lazily initialized value of the {@link SillyLazy#val2() val2} attribute.
* Initialized once and only once and stored for subsequent access with proper synchronization.
* @return A lazily initialized value of the {@code l.name} attribute
*/
@Override
public int val2() {
if ((lazyInitBitmap & VAL2_LAZY_INIT_BIT) == 0) {
synchronized (this) {
if ((lazyInitBitmap & VAL2_LAZY_INIT_BIT) == 0) {
this.val2 = super.val2();
lazyInitBitmap |= VAL2_LAZY_INIT_BIT;
}
}
}
return val2;
}
/**
* Construct a new immutable {@code SillyLazy} instance.
* @param counter The value for the {@code counter} attribute
* @return An immutable SillyLazy instance
*/
public static ImmutableSillyLazy of(AtomicInteger counter) {
return new ImmutableSillyLazy(counter);
}
/**
* Creates an immutable copy of a {@link SillyLazy} value.
* Uses accessors to get values to initialize the new immutable instance.
* If an instance is already immutable, it is returned as is.
* @param instance The instance to copy
* @return A copied immutable SillyLazy instance
*/
public static ImmutableSillyLazy copyOf(SillyLazy instance) {
if (instance instanceof ImmutableSillyLazy) {
return (ImmutableSillyLazy) instance;
}
return ImmutableSillyLazy.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {@link ImmutableSillyLazy ImmutableSillyLazy}.
* @return A new ImmutableSillyLazy builder
*/
public static ImmutableSillyLazy.Builder builder() {
return new ImmutableSillyLazy.Builder();
}
/**
* Builds instances of type {@link ImmutableSillyLazy ImmutableSillyLazy}.
* Initialize attributes and then invoke the {@link #build()} method to create an
* immutable instance.
*
{@code Builder} is not thread-safe and generally should not be stored in a field or collection,
* but instead used immediately to create instances.
*/
@NotThreadSafe
public static final class Builder {
private static final long INIT_BIT_COUNTER = 0x1L;
private long initBits = 0x1L;
private @Nullable AtomicInteger counter;
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {@code SillyLazy} instance.
* Regular attribute values will be replaced with those from the given instance.
* Absent optional values will not replace present values.
* @param instance The instance from which to copy values
* @return {@code this} builder for use in a chained invocation
*/
public final Builder from(SillyLazy instance) {
Preconditions.checkNotNull(instance, "instance");
counter(instance.counter());
return this;
}
/**
* Initializes the value for the {@link SillyLazy#counter() counter} attribute.
* @param counter The value for counter
* @return {@code this} builder for use in a chained invocation
*/
public final Builder counter(AtomicInteger counter) {
this.counter = Preconditions.checkNotNull(counter, "counter");
initBits &= ~INIT_BIT_COUNTER;
return this;
}
/**
* Builds a new {@link ImmutableSillyLazy ImmutableSillyLazy}.
* @return An immutable instance of SillyLazy
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableSillyLazy build() {
if (initBits != 0) {
throw new IllegalStateException(formatRequiredAttributesMessage());
}
return new ImmutableSillyLazy(null, counter);
}
private String formatRequiredAttributesMessage() {
List attributes = Lists.newArrayList();
if ((initBits & INIT_BIT_COUNTER) != 0) attributes.add("counter");
return "Cannot build SillyLazy, some of required attributes are not set " + attributes;
}
}
}