org.cloudfoundry.multiapps.controller.persistence.model.ImmutableLockOwnerEntry Maven / Gradle / Ivy
package org.cloudfoundry.multiapps.controller.persistence.model;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
* Immutable implementation of {@link LockOwnerEntry}.
*
* Use the builder to create immutable instances:
* {@code ImmutableLockOwnerEntry.builder()}.
*/
@SuppressWarnings({"all"})
public final class ImmutableLockOwnerEntry
implements LockOwnerEntry {
private final long id;
private final String lockOwner;
private final LocalDateTime timestamp;
private ImmutableLockOwnerEntry(ImmutableLockOwnerEntry.Builder builder) {
this.lockOwner = builder.lockOwner;
this.timestamp = builder.timestamp;
this.id = builder.idIsSet()
? builder.id
: LockOwnerEntry.super.getId();
}
private ImmutableLockOwnerEntry(long id, String lockOwner, LocalDateTime timestamp) {
this.id = id;
this.lockOwner = lockOwner;
this.timestamp = timestamp;
}
/**
* @return The value of the {@code id} attribute
*/
@Override
public long getId() {
return id;
}
/**
* @return The value of the {@code lockOwner} attribute
*/
@Override
public String getLockOwner() {
return lockOwner;
}
/**
* @return The value of the {@code timestamp} attribute
*/
@Override
public LocalDateTime getTimestamp() {
return timestamp;
}
/**
* Copy the current immutable object by setting a value for the {@link LockOwnerEntry#getId() id} attribute.
* A value equality check is used to prevent copying of the same value by returning {@code this}.
* @param value A new value for id
* @return A modified copy of the {@code this} object
*/
public final ImmutableLockOwnerEntry withId(long value) {
if (this.id == value) return this;
return new ImmutableLockOwnerEntry(value, this.lockOwner, this.timestamp);
}
/**
* Copy the current immutable object by setting a value for the {@link LockOwnerEntry#getLockOwner() lockOwner} attribute.
* An equals check used to prevent copying of the same value by returning {@code this}.
* @param value A new value for lockOwner
* @return A modified copy of the {@code this} object
*/
public final ImmutableLockOwnerEntry withLockOwner(String value) {
String newValue = Objects.requireNonNull(value, "lockOwner");
if (this.lockOwner.equals(newValue)) return this;
return new ImmutableLockOwnerEntry(this.id, newValue, this.timestamp);
}
/**
* Copy the current immutable object by setting a value for the {@link LockOwnerEntry#getTimestamp() timestamp} attribute.
* A shallow reference equality check is used to prevent copying of the same value by returning {@code this}.
* @param value A new value for timestamp
* @return A modified copy of the {@code this} object
*/
public final ImmutableLockOwnerEntry withTimestamp(LocalDateTime value) {
if (this.timestamp == value) return this;
LocalDateTime newValue = Objects.requireNonNull(value, "timestamp");
return new ImmutableLockOwnerEntry(this.id, this.lockOwner, newValue);
}
/**
* This instance is equal to all instances of {@code ImmutableLockOwnerEntry} that have equal attribute values.
* @return {@code true} if {@code this} is equal to {@code another} instance
*/
@Override
public boolean equals(Object another) {
if (this == another) return true;
return another instanceof ImmutableLockOwnerEntry
&& equalTo(0, (ImmutableLockOwnerEntry) another);
}
private boolean equalTo(int synthetic, ImmutableLockOwnerEntry another) {
return id == another.id
&& lockOwner.equals(another.lockOwner)
&& timestamp.equals(another.timestamp);
}
/**
* Computes a hash code from attributes: {@code id}, {@code lockOwner}, {@code timestamp}.
* @return hashCode value
*/
@Override
public int hashCode() {
int h = 5381;
h += (h << 5) + Long.hashCode(id);
h += (h << 5) + lockOwner.hashCode();
h += (h << 5) + timestamp.hashCode();
return h;
}
/**
* Prints the immutable value {@code LockOwnerEntry} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return "LockOwnerEntry{"
+ "id=" + id
+ ", lockOwner=" + lockOwner
+ ", timestamp=" + timestamp
+ "}";
}
/**
* Creates an immutable copy of a {@link LockOwnerEntry} 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 LockOwnerEntry instance
*/
public static ImmutableLockOwnerEntry copyOf(LockOwnerEntry instance) {
if (instance instanceof ImmutableLockOwnerEntry) {
return (ImmutableLockOwnerEntry) instance;
}
return ImmutableLockOwnerEntry.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {@link ImmutableLockOwnerEntry ImmutableLockOwnerEntry}.
*
* ImmutableLockOwnerEntry.builder()
* .id(long) // optional {@link LockOwnerEntry#getId() id}
* .lockOwner(String) // required {@link LockOwnerEntry#getLockOwner() lockOwner}
* .timestamp(java.time.LocalDateTime) // required {@link LockOwnerEntry#getTimestamp() timestamp}
* .build();
*
* @return A new ImmutableLockOwnerEntry builder
*/
public static ImmutableLockOwnerEntry.Builder builder() {
return new ImmutableLockOwnerEntry.Builder();
}
/**
* Builds instances of type {@link ImmutableLockOwnerEntry ImmutableLockOwnerEntry}.
* 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.
*/
public static final class Builder {
private static final long INIT_BIT_LOCK_OWNER = 0x1L;
private static final long INIT_BIT_TIMESTAMP = 0x2L;
private static final long OPT_BIT_ID = 0x1L;
private long initBits = 0x3L;
private long optBits;
private long id;
private String lockOwner;
private LocalDateTime timestamp;
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {@code LockOwnerEntry} 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(LockOwnerEntry instance) {
Objects.requireNonNull(instance, "instance");
this.id(instance.getId());
this.lockOwner(instance.getLockOwner());
this.timestamp(instance.getTimestamp());
return this;
}
/**
* Initializes the value for the {@link LockOwnerEntry#getId() id} attribute.
*
If not set, this attribute will have a default value as returned by the initializer of {@link LockOwnerEntry#getId() id}.
* @param id The value for id
* @return {@code this} builder for use in a chained invocation
*/
public final Builder id(long id) {
this.id = id;
optBits |= OPT_BIT_ID;
return this;
}
/**
* Initializes the value for the {@link LockOwnerEntry#getLockOwner() lockOwner} attribute.
* @param lockOwner The value for lockOwner
* @return {@code this} builder for use in a chained invocation
*/
public final Builder lockOwner(String lockOwner) {
this.lockOwner = Objects.requireNonNull(lockOwner, "lockOwner");
initBits &= ~INIT_BIT_LOCK_OWNER;
return this;
}
/**
* Initializes the value for the {@link LockOwnerEntry#getTimestamp() timestamp} attribute.
* @param timestamp The value for timestamp
* @return {@code this} builder for use in a chained invocation
*/
public final Builder timestamp(LocalDateTime timestamp) {
this.timestamp = Objects.requireNonNull(timestamp, "timestamp");
initBits &= ~INIT_BIT_TIMESTAMP;
return this;
}
/**
* Builds a new {@link ImmutableLockOwnerEntry ImmutableLockOwnerEntry}.
* @return An immutable instance of LockOwnerEntry
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableLockOwnerEntry build() {
if (initBits != 0) {
throw new IllegalStateException(formatRequiredAttributesMessage());
}
return new ImmutableLockOwnerEntry(this);
}
private boolean idIsSet() {
return (optBits & OPT_BIT_ID) != 0;
}
private String formatRequiredAttributesMessage() {
List attributes = new ArrayList<>();
if ((initBits & INIT_BIT_LOCK_OWNER) != 0) attributes.add("lockOwner");
if ((initBits & INIT_BIT_TIMESTAMP) != 0) attributes.add("timestamp");
return "Cannot build LockOwnerEntry, some of required attributes are not set " + attributes;
}
}
}