org.mandas.docker.client.messages.swarm.ImmutableService Maven / Gradle / Ivy
package org.mandas.docker.client.messages.swarm;
import com.fasterxml.jackson.annotation.JsonProperty;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import org.mandas.docker.Nullable;
/**
* Immutable implementation of {@link Service}.
*
* Use the builder to create immutable instances:
* {@code ImmutableService.builder()}.
*/
@SuppressWarnings({"all"})
final class ImmutableService implements Service {
private final String id;
private final Version version;
private final Date createdAt;
private final Date updatedAt;
private final ServiceSpec spec;
private final Endpoint endpoint;
private final @Nullable UpdateStatus updateStatus;
private final @Nullable JobStatus jobStatus;
private ImmutableService(
String id,
Version version,
Date createdAt,
Date updatedAt,
ServiceSpec spec,
Endpoint endpoint,
@Nullable UpdateStatus updateStatus,
@Nullable JobStatus jobStatus) {
this.id = id;
this.version = version;
this.createdAt = createdAt;
this.updatedAt = updatedAt;
this.spec = spec;
this.endpoint = endpoint;
this.updateStatus = updateStatus;
this.jobStatus = jobStatus;
}
/**
* @return The value of the {@code id} attribute
*/
@JsonProperty("ID")
@Override
public String id() {
return id;
}
/**
* @return The value of the {@code version} attribute
*/
@JsonProperty("Version")
@Override
public Version version() {
return version;
}
/**
* @return The value of the {@code createdAt} attribute
*/
@JsonProperty("CreatedAt")
@Override
public Date createdAt() {
return createdAt;
}
/**
* @return The value of the {@code updatedAt} attribute
*/
@JsonProperty("UpdatedAt")
@Override
public Date updatedAt() {
return updatedAt;
}
/**
* @return The value of the {@code spec} attribute
*/
@JsonProperty("Spec")
@Override
public ServiceSpec spec() {
return spec;
}
/**
* @return The value of the {@code endpoint} attribute
*/
@JsonProperty("Endpoint")
@Override
public Endpoint endpoint() {
return endpoint;
}
/**
* @return The value of the {@code updateStatus} attribute
*/
@JsonProperty("UpdateStatus")
@Override
public @Nullable UpdateStatus updateStatus() {
return updateStatus;
}
/**
* @return The value of the {@code jobStatus} attribute
*/
@JsonProperty("JobStatus")
@Override
public @Nullable JobStatus jobStatus() {
return jobStatus;
}
/**
* Copy the current immutable object by setting a value for the {@link Service#id() id} attribute.
* An equals check 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 ImmutableService withId(String value) {
String newValue = Objects.requireNonNull(value, "id");
if (this.id.equals(newValue)) return this;
return new ImmutableService(
newValue,
this.version,
this.createdAt,
this.updatedAt,
this.spec,
this.endpoint,
this.updateStatus,
this.jobStatus);
}
/**
* Copy the current immutable object by setting a value for the {@link Service#version() version} 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 version
* @return A modified copy of the {@code this} object
*/
public final ImmutableService withVersion(Version value) {
if (this.version == value) return this;
Version newValue = Objects.requireNonNull(value, "version");
return new ImmutableService(
this.id,
newValue,
this.createdAt,
this.updatedAt,
this.spec,
this.endpoint,
this.updateStatus,
this.jobStatus);
}
/**
* Copy the current immutable object by setting a value for the {@link Service#createdAt() createdAt} 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 createdAt
* @return A modified copy of the {@code this} object
*/
public final ImmutableService withCreatedAt(Date value) {
if (this.createdAt == value) return this;
Date newValue = Objects.requireNonNull(value, "createdAt");
return new ImmutableService(
this.id,
this.version,
newValue,
this.updatedAt,
this.spec,
this.endpoint,
this.updateStatus,
this.jobStatus);
}
/**
* Copy the current immutable object by setting a value for the {@link Service#updatedAt() updatedAt} 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 updatedAt
* @return A modified copy of the {@code this} object
*/
public final ImmutableService withUpdatedAt(Date value) {
if (this.updatedAt == value) return this;
Date newValue = Objects.requireNonNull(value, "updatedAt");
return new ImmutableService(
this.id,
this.version,
this.createdAt,
newValue,
this.spec,
this.endpoint,
this.updateStatus,
this.jobStatus);
}
/**
* Copy the current immutable object by setting a value for the {@link Service#spec() spec} 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 spec
* @return A modified copy of the {@code this} object
*/
public final ImmutableService withSpec(ServiceSpec value) {
if (this.spec == value) return this;
ServiceSpec newValue = Objects.requireNonNull(value, "spec");
return new ImmutableService(
this.id,
this.version,
this.createdAt,
this.updatedAt,
newValue,
this.endpoint,
this.updateStatus,
this.jobStatus);
}
/**
* Copy the current immutable object by setting a value for the {@link Service#endpoint() endpoint} 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 endpoint
* @return A modified copy of the {@code this} object
*/
public final ImmutableService withEndpoint(Endpoint value) {
if (this.endpoint == value) return this;
Endpoint newValue = Objects.requireNonNull(value, "endpoint");
return new ImmutableService(
this.id,
this.version,
this.createdAt,
this.updatedAt,
this.spec,
newValue,
this.updateStatus,
this.jobStatus);
}
/**
* Copy the current immutable object by setting a value for the {@link Service#updateStatus() updateStatus} 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 updateStatus (can be {@code null})
* @return A modified copy of the {@code this} object
*/
public final ImmutableService withUpdateStatus(@Nullable UpdateStatus value) {
if (this.updateStatus == value) return this;
return new ImmutableService(
this.id,
this.version,
this.createdAt,
this.updatedAt,
this.spec,
this.endpoint,
value,
this.jobStatus);
}
/**
* Copy the current immutable object by setting a value for the {@link Service#jobStatus() jobStatus} 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 jobStatus (can be {@code null})
* @return A modified copy of the {@code this} object
*/
public final ImmutableService withJobStatus(@Nullable JobStatus value) {
if (this.jobStatus == value) return this;
return new ImmutableService(
this.id,
this.version,
this.createdAt,
this.updatedAt,
this.spec,
this.endpoint,
this.updateStatus,
value);
}
/**
* This instance is equal to all instances of {@code ImmutableService} 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 ImmutableService
&& equalTo(0, (ImmutableService) another);
}
private boolean equalTo(int synthetic, ImmutableService another) {
return id.equals(another.id)
&& version.equals(another.version)
&& createdAt.equals(another.createdAt)
&& updatedAt.equals(another.updatedAt)
&& spec.equals(another.spec)
&& endpoint.equals(another.endpoint)
&& Objects.equals(updateStatus, another.updateStatus)
&& Objects.equals(jobStatus, another.jobStatus);
}
/**
* Computes a hash code from attributes: {@code id}, {@code version}, {@code createdAt}, {@code updatedAt}, {@code spec}, {@code endpoint}, {@code updateStatus}, {@code jobStatus}.
* @return hashCode value
*/
@Override
public int hashCode() {
int h = 5381;
h += (h << 5) + id.hashCode();
h += (h << 5) + version.hashCode();
h += (h << 5) + createdAt.hashCode();
h += (h << 5) + updatedAt.hashCode();
h += (h << 5) + spec.hashCode();
h += (h << 5) + endpoint.hashCode();
h += (h << 5) + Objects.hashCode(updateStatus);
h += (h << 5) + Objects.hashCode(jobStatus);
return h;
}
/**
* Prints the immutable value {@code Service} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return "Service{"
+ "id=" + id
+ ", version=" + version
+ ", createdAt=" + createdAt
+ ", updatedAt=" + updatedAt
+ ", spec=" + spec
+ ", endpoint=" + endpoint
+ ", updateStatus=" + updateStatus
+ ", jobStatus=" + jobStatus
+ "}";
}
/**
* Creates an immutable copy of a {@link Service} 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 Service instance
*/
public static ImmutableService copyOf(Service instance) {
if (instance instanceof ImmutableService) {
return (ImmutableService) instance;
}
return ImmutableService.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {@link ImmutableService ImmutableService}.
*
* ImmutableService.builder()
* .id(String) // required {@link Service#id() id}
* .version(org.mandas.docker.client.messages.swarm.Version) // required {@link Service#version() version}
* .createdAt(Date) // required {@link Service#createdAt() createdAt}
* .updatedAt(Date) // required {@link Service#updatedAt() updatedAt}
* .spec(org.mandas.docker.client.messages.swarm.ServiceSpec) // required {@link Service#spec() spec}
* .endpoint(org.mandas.docker.client.messages.swarm.Endpoint) // required {@link Service#endpoint() endpoint}
* .updateStatus(org.mandas.docker.client.messages.swarm.UpdateStatus | null) // nullable {@link Service#updateStatus() updateStatus}
* .jobStatus(org.mandas.docker.client.messages.swarm.JobStatus | null) // nullable {@link Service#jobStatus() jobStatus}
* .build();
*
* @return A new ImmutableService builder
*/
public static ImmutableService.Builder builder() {
return new ImmutableService.Builder();
}
/**
* Builds instances of type {@link ImmutableService ImmutableService}.
* 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.
*/
static final class Builder {
private static final long INIT_BIT_ID = 0x1L;
private static final long INIT_BIT_VERSION = 0x2L;
private static final long INIT_BIT_CREATED_AT = 0x4L;
private static final long INIT_BIT_UPDATED_AT = 0x8L;
private static final long INIT_BIT_SPEC = 0x10L;
private static final long INIT_BIT_ENDPOINT = 0x20L;
private long initBits = 0x3fL;
private String id;
private Version version;
private Date createdAt;
private Date updatedAt;
private ServiceSpec spec;
private Endpoint endpoint;
private UpdateStatus updateStatus;
private JobStatus jobStatus;
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {@code Service} 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(Service instance) {
Objects.requireNonNull(instance, "instance");
id(instance.id());
version(instance.version());
createdAt(instance.createdAt());
updatedAt(instance.updatedAt());
spec(instance.spec());
endpoint(instance.endpoint());
@Nullable UpdateStatus updateStatusValue = instance.updateStatus();
if (updateStatusValue != null) {
updateStatus(updateStatusValue);
}
@Nullable JobStatus jobStatusValue = instance.jobStatus();
if (jobStatusValue != null) {
jobStatus(jobStatusValue);
}
return this;
}
/**
* Initializes the value for the {@link Service#id() id} attribute.
* @param id The value for id
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("ID")
public final Builder id(String id) {
this.id = Objects.requireNonNull(id, "id");
initBits &= ~INIT_BIT_ID;
return this;
}
/**
* Initializes the value for the {@link Service#version() version} attribute.
* @param version The value for version
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("Version")
public final Builder version(Version version) {
this.version = Objects.requireNonNull(version, "version");
initBits &= ~INIT_BIT_VERSION;
return this;
}
/**
* Initializes the value for the {@link Service#createdAt() createdAt} attribute.
* @param createdAt The value for createdAt
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("CreatedAt")
public final Builder createdAt(Date createdAt) {
this.createdAt = Objects.requireNonNull(createdAt, "createdAt");
initBits &= ~INIT_BIT_CREATED_AT;
return this;
}
/**
* Initializes the value for the {@link Service#updatedAt() updatedAt} attribute.
* @param updatedAt The value for updatedAt
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("UpdatedAt")
public final Builder updatedAt(Date updatedAt) {
this.updatedAt = Objects.requireNonNull(updatedAt, "updatedAt");
initBits &= ~INIT_BIT_UPDATED_AT;
return this;
}
/**
* Initializes the value for the {@link Service#spec() spec} attribute.
* @param spec The value for spec
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("Spec")
public final Builder spec(ServiceSpec spec) {
this.spec = Objects.requireNonNull(spec, "spec");
initBits &= ~INIT_BIT_SPEC;
return this;
}
/**
* Initializes the value for the {@link Service#endpoint() endpoint} attribute.
* @param endpoint The value for endpoint
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("Endpoint")
public final Builder endpoint(Endpoint endpoint) {
this.endpoint = Objects.requireNonNull(endpoint, "endpoint");
initBits &= ~INIT_BIT_ENDPOINT;
return this;
}
/**
* Initializes the value for the {@link Service#updateStatus() updateStatus} attribute.
* @param updateStatus The value for updateStatus (can be {@code null})
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("UpdateStatus")
public final Builder updateStatus(@Nullable UpdateStatus updateStatus) {
this.updateStatus = updateStatus;
return this;
}
/**
* Initializes the value for the {@link Service#jobStatus() jobStatus} attribute.
* @param jobStatus The value for jobStatus (can be {@code null})
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("JobStatus")
public final Builder jobStatus(@Nullable JobStatus jobStatus) {
this.jobStatus = jobStatus;
return this;
}
/**
* Builds a new {@link ImmutableService ImmutableService}.
* @return An immutable instance of Service
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableService build() {
if (initBits != 0) {
throw new IllegalStateException(formatRequiredAttributesMessage());
}
return new ImmutableService(id, version, createdAt, updatedAt, spec, endpoint, updateStatus, jobStatus);
}
private String formatRequiredAttributesMessage() {
List attributes = new ArrayList<>();
if ((initBits & INIT_BIT_ID) != 0) attributes.add("id");
if ((initBits & INIT_BIT_VERSION) != 0) attributes.add("version");
if ((initBits & INIT_BIT_CREATED_AT) != 0) attributes.add("createdAt");
if ((initBits & INIT_BIT_UPDATED_AT) != 0) attributes.add("updatedAt");
if ((initBits & INIT_BIT_SPEC) != 0) attributes.add("spec");
if ((initBits & INIT_BIT_ENDPOINT) != 0) attributes.add("endpoint");
return "Cannot build Service, some of required attributes are not set " + attributes;
}
}
/**
* Immutable implementation of {@link Service.Criteria}.
*
* Use the builder to create immutable instances:
* {@code ImmutableService.Criteria.builder()}.
*/
static final class Criteria implements Service.Criteria {
private final @Nullable String serviceId;
private final @Nullable String serviceName;
private final Map labels;
private Criteria(
@Nullable String serviceId,
@Nullable String serviceName,
Map labels) {
this.serviceId = serviceId;
this.serviceName = serviceName;
this.labels = labels;
}
/**
* @return The value of the {@code serviceId} attribute
*/
@JsonProperty("serviceId")
@Override
public @Nullable String serviceId() {
return serviceId;
}
/**
* @return The value of the {@code serviceName} attribute
*/
@JsonProperty("serviceName")
@Override
public @Nullable String serviceName() {
return serviceName;
}
/**
* @return The value of the {@code labels} attribute
*/
@JsonProperty("labels")
@Override
public Map labels() {
return labels;
}
/**
* Copy the current immutable object by setting a value for the {@link Service.Criteria#serviceId() serviceId} attribute.
* An equals check used to prevent copying of the same value by returning {@code this}.
* @param value A new value for serviceId (can be {@code null})
* @return A modified copy of the {@code this} object
*/
public final ImmutableService.Criteria withServiceId(@Nullable String value) {
if (Objects.equals(this.serviceId, value)) return this;
return new ImmutableService.Criteria(value, this.serviceName, this.labels);
}
/**
* Copy the current immutable object by setting a value for the {@link Service.Criteria#serviceName() serviceName} attribute.
* An equals check used to prevent copying of the same value by returning {@code this}.
* @param value A new value for serviceName (can be {@code null})
* @return A modified copy of the {@code this} object
*/
public final ImmutableService.Criteria withServiceName(@Nullable String value) {
if (Objects.equals(this.serviceName, value)) return this;
return new ImmutableService.Criteria(this.serviceId, value, this.labels);
}
/**
* Copy the current immutable object by replacing the {@link Service.Criteria#labels() labels} map with the specified map.
* Nulls are not permitted as keys or values.
* A shallow reference equality check is used to prevent copying of the same value by returning {@code this}.
* @param entries The entries to be added to the labels map
* @return A modified copy of {@code this} object
*/
public final ImmutableService.Criteria withLabels(Map entries) {
if (this.labels == entries) return this;
Map newValue = createUnmodifiableMap(true, false, entries);
return new ImmutableService.Criteria(this.serviceId, this.serviceName, newValue);
}
/**
* This instance is equal to all instances of {@code Criteria} 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 ImmutableService.Criteria
&& equalTo(0, (ImmutableService.Criteria) another);
}
private boolean equalTo(int synthetic, ImmutableService.Criteria another) {
return Objects.equals(serviceId, another.serviceId)
&& Objects.equals(serviceName, another.serviceName)
&& labels.equals(another.labels);
}
/**
* Computes a hash code from attributes: {@code serviceId}, {@code serviceName}, {@code labels}.
* @return hashCode value
*/
@Override
public int hashCode() {
int h = 5381;
h += (h << 5) + Objects.hashCode(serviceId);
h += (h << 5) + Objects.hashCode(serviceName);
h += (h << 5) + labels.hashCode();
return h;
}
/**
* Prints the immutable value {@code Criteria} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return "Criteria{"
+ "serviceId=" + serviceId
+ ", serviceName=" + serviceName
+ ", labels=" + labels
+ "}";
}
/**
* Creates an immutable copy of a {@link Service.Criteria} 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 Criteria instance
*/
public static ImmutableService.Criteria copyOf(Service.Criteria instance) {
if (instance instanceof ImmutableService.Criteria) {
return (ImmutableService.Criteria) instance;
}
return ImmutableService.Criteria.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {@link ImmutableService.Criteria Criteria}.
*
* ImmutableService.Criteria.builder()
* .serviceId(String | null) // nullable {@link Service.Criteria#serviceId() serviceId}
* .serviceName(String | null) // nullable {@link Service.Criteria#serviceName() serviceName}
* .addLabel|putAllLabels(String => String) // {@link Service.Criteria#labels() labels} mappings
* .build();
*
* @return A new Criteria builder
*/
public static ImmutableService.Criteria.Builder builder() {
return new ImmutableService.Criteria.Builder();
}
/**
* Builds instances of type {@link ImmutableService.Criteria Criteria}.
* 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.
*/
static final class Builder implements Service.Criteria.Builder {
private String serviceId;
private String serviceName;
private Map labels = new LinkedHashMap();
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {@code Criteria} instance.
* Regular attribute values will be replaced with those from the given instance.
* Absent optional values will not replace present values.
* Collection elements and entries will be added, not replaced.
* @param instance The instance from which to copy values
* @return {@code this} builder for use in a chained invocation
*/
public final Builder from(Service.Criteria instance) {
Objects.requireNonNull(instance, "instance");
@Nullable String serviceIdValue = instance.serviceId();
if (serviceIdValue != null) {
serviceId(serviceIdValue);
}
@Nullable String serviceNameValue = instance.serviceName();
if (serviceNameValue != null) {
serviceName(serviceNameValue);
}
putAllLabels(instance.labels());
return this;
}
/**
* Initializes the value for the {@link Service.Criteria#serviceId() serviceId} attribute.
* @param serviceId The value for serviceId (can be {@code null})
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("serviceId")
public final Builder serviceId(@Nullable String serviceId) {
this.serviceId = serviceId;
return this;
}
/**
* Initializes the value for the {@link Service.Criteria#serviceName() serviceName} attribute.
* @param serviceName The value for serviceName (can be {@code null})
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("serviceName")
public final Builder serviceName(@Nullable String serviceName) {
this.serviceName = serviceName;
return this;
}
/**
* Put one entry to the {@link Service.Criteria#labels() labels} map.
* @param key The key in the labels map
* @param value The associated value in the labels map
* @return {@code this} builder for use in a chained invocation
*/
public final Builder addLabel(String key, String value) {
this.labels.put(
Objects.requireNonNull(key, "labels key"),
Objects.requireNonNull(value, value == null ? "labels value for key: " + key : null));
return this;
}
/**
* Put one entry to the {@link Service.Criteria#labels() labels} map. Nulls are not permitted
* @param entry The key and value entry
* @return {@code this} builder for use in a chained invocation
*/
public final Builder addLabel(Map.Entry entry) {
String k = entry.getKey();
String v = entry.getValue();
this.labels.put(
Objects.requireNonNull(k, "labels key"),
Objects.requireNonNull(v, v == null ? "labels value for key: " + k : null));
return this;
}
/**
* Sets or replaces all mappings from the specified map as entries for the {@link Service.Criteria#labels() labels} map. Nulls are not permitted
* @param entries The entries that will be added to the labels map
* @return {@code this} builder for use in a chained invocation
*/
@JsonProperty("labels")
public final Builder labels(Map entries) {
this.labels.clear();
return putAllLabels(entries);
}
/**
* Put all mappings from the specified map as entries to {@link Service.Criteria#labels() labels} map. Nulls are not permitted
* @param entries The entries that will be added to the labels map
* @return {@code this} builder for use in a chained invocation
*/
public final Builder putAllLabels(Map entries) {
for (Map.Entry e : entries.entrySet()) {
String k = e.getKey();
String v = e.getValue();
this.labels.put(
Objects.requireNonNull(k, "labels key"),
Objects.requireNonNull(v, v == null ? "labels value for key: " + k : null));
}
return this;
}
/**
* Builds a new {@link ImmutableService.Criteria Criteria}.
* @return An immutable instance of Criteria
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableService.Criteria build() {
return new ImmutableService.Criteria(serviceId, serviceName, createUnmodifiableMap(false, false, labels));
}
}
}
private static Map createUnmodifiableMap(boolean checkNulls, boolean skipNulls, Map extends K, ? extends V> map) {
switch (map.size()) {
case 0: return Collections.emptyMap();
case 1: {
Map.Entry extends K, ? extends V> e = map.entrySet().iterator().next();
K k = e.getKey();
V v = e.getValue();
if (checkNulls) {
Objects.requireNonNull(k, "key");
Objects.requireNonNull(v, v == null ? "value for key: " + k : null);
}
if (skipNulls && (k == null || v == null)) {
return Collections.emptyMap();
}
return Collections.singletonMap(k, v);
}
default: {
Map linkedMap = new LinkedHashMap<>(map.size() * 4 / 3 + 1);
if (skipNulls || checkNulls) {
for (Map.Entry extends K, ? extends V> e : map.entrySet()) {
K k = e.getKey();
V v = e.getValue();
if (skipNulls) {
if (k == null || v == null) continue;
} else if (checkNulls) {
Objects.requireNonNull(k, "key");
Objects.requireNonNull(v, v == null ? "value for key: " + k : null);
}
linkedMap.put(k, v);
}
} else {
linkedMap.putAll(map);
}
return Collections.unmodifiableMap(linkedMap);
}
}
}
}