java.lang.Object

graphql.util.LinkedHashMapFactory

public final class LinkedHashMapFactory extends Object

Factory class for creating LinkedHashMap instances with insertion order preservation. Use this instead of Map.of() to ensure consistent serialization order.

This class provides static factory methods similar to Map.of() but returns mutable LinkedHashMap instances that preserve insertion order, which is important for consistent serialization.

Method Summary

Modifier and Type

Method

Description

static <K, V> Map<K,V>

of()

Returns an empty LinkedHashMap.

static <K, V> Map<K,V>

of(K k1, V v1)

Returns a LinkedHashMap containing a single mapping.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2)

Returns a LinkedHashMap containing two mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3)

Returns a LinkedHashMap containing three mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4)

Returns a LinkedHashMap containing four mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5)

Returns a LinkedHashMap containing five mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6)

Returns a LinkedHashMap containing six mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7)

Returns a LinkedHashMap containing seven mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8)

Returns a LinkedHashMap containing eight mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8, K k9, V v9)

Returns a LinkedHashMap containing nine mappings.

static <K, V> Map<K,V>

of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8, K k9, V v9, K k10, V v10)

Returns a LinkedHashMap containing ten mappings.

static <K, V> Map<K,V>

ofEntries(Object... keyValues)

Returns a LinkedHashMap containing mappings derived from the given arguments.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- of
  
  public static <K, V> Map<K,V> of()
  
  Returns an empty LinkedHashMap.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Returns:
  
  an empty LinkedHashMap
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1)
  
  Returns a LinkedHashMap containing a single mapping.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the mapping's key
  
  v1 - the mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mapping
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2)
  
  Returns a LinkedHashMap containing two mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3)
  
  Returns a LinkedHashMap containing three mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4)
  
  Returns a LinkedHashMap containing four mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  k4 - the fourth mapping's key
  
  v4 - the fourth mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5)
  
  Returns a LinkedHashMap containing five mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  k4 - the fourth mapping's key
  
  v4 - the fourth mapping's value
  
  k5 - the fifth mapping's key
  
  v5 - the fifth mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6)
  
  Returns a LinkedHashMap containing six mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  k4 - the fourth mapping's key
  
  v4 - the fourth mapping's value
  
  k5 - the fifth mapping's key
  
  v5 - the fifth mapping's value
  
  k6 - the sixth mapping's key
  
  v6 - the sixth mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7)
  
  Returns a LinkedHashMap containing seven mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  k4 - the fourth mapping's key
  
  v4 - the fourth mapping's value
  
  k5 - the fifth mapping's key
  
  v5 - the fifth mapping's value
  
  k6 - the sixth mapping's key
  
  v6 - the sixth mapping's value
  
  k7 - the seventh mapping's key
  
  v7 - the seventh mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8)
  
  Returns a LinkedHashMap containing eight mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  k4 - the fourth mapping's key
  
  v4 - the fourth mapping's value
  
  k5 - the fifth mapping's key
  
  v5 - the fifth mapping's value
  
  k6 - the sixth mapping's key
  
  v6 - the sixth mapping's value
  
  k7 - the seventh mapping's key
  
  v7 - the seventh mapping's value
  
  k8 - the eighth mapping's key
  
  v8 - the eighth mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8, K k9, V v9)
  
  Returns a LinkedHashMap containing nine mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  k4 - the fourth mapping's key
  
  v4 - the fourth mapping's value
  
  k5 - the fifth mapping's key
  
  v5 - the fifth mapping's value
  
  k6 - the sixth mapping's key
  
  v6 - the sixth mapping's value
  
  k7 - the seventh mapping's key
  
  v7 - the seventh mapping's value
  
  k8 - the eighth mapping's key
  
  v8 - the eighth mapping's value
  
  k9 - the ninth mapping's key
  
  v9 - the ninth mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- of
  
  public static <K, V> Map<K,V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4, K k5, V v5, K k6, V v6, K k7, V v7, K k8, V v8, K k9, V v9, K k10, V v10)
  
  Returns a LinkedHashMap containing ten mappings.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  k1 - the first mapping's key
  
  v1 - the first mapping's value
  
  k2 - the second mapping's key
  
  v2 - the second mapping's value
  
  k3 - the third mapping's key
  
  v3 - the third mapping's value
  
  k4 - the fourth mapping's key
  
  v4 - the fourth mapping's value
  
  k5 - the fifth mapping's key
  
  v5 - the fifth mapping's value
  
  k6 - the sixth mapping's key
  
  v6 - the sixth mapping's value
  
  k7 - the seventh mapping's key
  
  v7 - the seventh mapping's value
  
  k8 - the eighth mapping's key
  
  v8 - the eighth mapping's value
  
  k9 - the ninth mapping's key
  
  v9 - the ninth mapping's value
  
  k10 - the tenth mapping's key
  
  v10 - the tenth mapping's value
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
- ofEntries
  
  public static <K, V> Map<K,V> ofEntries(Object... keyValues)
  
  Returns a LinkedHashMap containing mappings derived from the given arguments.
  This method is provided for cases where more than 10 key-value pairs are needed. It accepts alternating keys and values.
  
  Type Parameters:
  
  K - the key type
  
  V - the value type
  
  Parameters:
  
  keyValues - alternating keys and values
  
  Returns:
  
  a LinkedHashMap containing the specified mappings
  
  Throws:
  
  IllegalArgumentException - if an odd number of arguments is provided

Class LinkedHashMapFactory

Method Summary

Methods inherited from class java.lang.Object

Method Details

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of

of

of

of

of

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of

of

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ofEntries