https://github.com/datastax/java-driver/java-driver-core: A driver for Apache Cassandra(R) 2.1+ that works exclusively with the Cassandra Query Language version 3 (CQL3) and Cassandra's native protocol versions 3 and above.
  • Various (DataStax) 
public class com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader implements com.datastax.oss.driver.api.core.config.DriverConfigLoader, java.util.function.Consumer<com.datastax.oss.driver.api.core.config.OptionsMap>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader
  super_class: java.lang.Object
{
  private final com.datastax.oss.driver.api.core.config.OptionsMap source;
    descriptor: Lcom/datastax/oss/driver/api/core/config/OptionsMap;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    RuntimeInvisibleAnnotations: 
      edu.umd.cs.findbugs.annotations.NonNull()

  private final java.util.Map<java.lang.String, java.util.Map<com.datastax.oss.driver.api.core.config.DriverOption, java.lang.Object>> rawMap;
    descriptor: Ljava/util/Map;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Map<Ljava/lang/String;Ljava/util/Map<Lcom/datastax/oss/driver/api/core/config/DriverOption;Ljava/lang/Object;>;>;
    RuntimeInvisibleAnnotations: 
      edu.umd.cs.findbugs.annotations.NonNull()

  private volatile com.datastax.oss.driver.internal.core.context.EventBus eventBus;
    descriptor: Lcom/datastax/oss/driver/internal/core/context/EventBus;
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 32
            ldc Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.$assertionsDisabled:Z
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(com.datastax.oss.driver.api.core.config.OptionsMap, java.util.Map<java.lang.String, java.util.Map<com.datastax.oss.driver.api.core.config.DriverOption, java.lang.Object>>);
    descriptor: (Lcom/datastax/oss/driver/api/core/config/OptionsMap;Ljava/util/Map;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
        start local 1 // com.datastax.oss.driver.api.core.config.OptionsMap source
        start local 2 // java.util.Map rawMap
         0: .line 38
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 40
            aload 0 /* this */
            aload 1 /* source */
            putfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.source:Lcom/datastax/oss/driver/api/core/config/OptionsMap;
         2: .line 41
            aload 0 /* this */
            aload 2 /* rawMap */
            putfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.rawMap:Ljava/util/Map;
         3: .line 42
            return
        end local 2 // java.util.Map rawMap
        end local 1 // com.datastax.oss.driver.api.core.config.OptionsMap source
        end local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;
            0    4     1  source  Lcom/datastax/oss/driver/api/core/config/OptionsMap;
            0    4     2  rawMap  Ljava/util/Map<Ljava/lang/String;Ljava/util/Map<Lcom/datastax/oss/driver/api/core/config/DriverOption;Ljava/lang/Object;>;>;
    Signature: (Lcom/datastax/oss/driver/api/core/config/OptionsMap;Ljava/util/Map<Ljava/lang/String;Ljava/util/Map<Lcom/datastax/oss/driver/api/core/config/DriverOption;Ljava/lang/Object;>;>;)V
    RuntimeInvisibleParameterAnnotations: 
      0:
        edu.umd.cs.findbugs.annotations.NonNull()
      1:
        edu.umd.cs.findbugs.annotations.NonNull()
    MethodParameters:
        Name  Flags
      source  
      rawMap  

  public com.datastax.oss.driver.api.core.config.DriverConfig getInitialConfig();
    descriptor: ()Lcom/datastax/oss/driver/api/core/config/DriverConfig;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
         0: .line 47
            new com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfig
            dup
            aload 0 /* this */
            getfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.rawMap:Ljava/util/Map;
            invokespecial com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfig.<init>:(Ljava/util/Map;)V
            areturn
        end local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;
    RuntimeInvisibleAnnotations: 
      edu.umd.cs.findbugs.annotations.NonNull()

  public void onDriverInit(com.datastax.oss.driver.api.core.context.DriverContext);
    descriptor: (Lcom/datastax/oss/driver/api/core/context/DriverContext;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
        start local 1 // com.datastax.oss.driver.api.core.context.DriverContext context
         0: .line 52
            aload 0 /* this */
            aload 1 /* context */
            checkcast com.datastax.oss.driver.internal.core.context.InternalDriverContext
            invokeinterface com.datastax.oss.driver.internal.core.context.InternalDriverContext.getEventBus:()Lcom/datastax/oss/driver/internal/core/context/EventBus;
            putfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.eventBus:Lcom/datastax/oss/driver/internal/core/context/EventBus;
         1: .line 53
            aload 0 /* this */
            getfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.source:Lcom/datastax/oss/driver/api/core/config/OptionsMap;
            aload 0 /* this */
            invokevirtual com.datastax.oss.driver.api.core.config.OptionsMap.addChangeListener:(Ljava/util/function/Consumer;)V
         2: .line 54
            return
        end local 1 // com.datastax.oss.driver.api.core.context.DriverContext context
        end local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    3     0     this  Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;
            0    3     1  context  Lcom/datastax/oss/driver/api/core/context/DriverContext;
    RuntimeInvisibleParameterAnnotations: 
      0:
        edu.umd.cs.findbugs.annotations.NonNull()
    MethodParameters:
         Name  Flags
      context  

  public void accept(com.datastax.oss.driver.api.core.config.OptionsMap);
    descriptor: (Lcom/datastax/oss/driver/api/core/config/OptionsMap;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
        start local 1 // com.datastax.oss.driver.api.core.config.OptionsMap map
         0: .line 58
            getstatic com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.$assertionsDisabled:Z
            ifne 1
            aload 0 /* this */
            getfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.eventBus:Lcom/datastax/oss/driver/internal/core/context/EventBus;
            ifnonnull 1
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         1: .line 59
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.eventBus:Lcom/datastax/oss/driver/internal/core/context/EventBus;
            getstatic com.datastax.oss.driver.internal.core.config.ConfigChangeEvent.INSTANCE:Lcom/datastax/oss/driver/internal/core/config/ConfigChangeEvent;
            invokevirtual com.datastax.oss.driver.internal.core.context.EventBus.fire:(Ljava/lang/Object;)V
         2: .line 60
            return
        end local 1 // com.datastax.oss.driver.api.core.config.OptionsMap map
        end local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;
            0    3     1   map  Lcom/datastax/oss/driver/api/core/config/OptionsMap;
    MethodParameters:
      Name  Flags
      map   

  public java.util.concurrent.CompletionStage<java.lang.Boolean> reload();
    descriptor: ()Ljava/util/concurrent/CompletionStage;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
         0: .line 65
            iconst_1
            invokestatic java.lang.Boolean.valueOf:(Z)Ljava/lang/Boolean;
            invokestatic java.util.concurrent.CompletableFuture.completedFuture:(Ljava/lang/Object;)Ljava/util/concurrent/CompletableFuture;
            areturn
        end local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;
    Signature: ()Ljava/util/concurrent/CompletionStage<Ljava/lang/Boolean;>;
    RuntimeInvisibleAnnotations: 
      edu.umd.cs.findbugs.annotations.NonNull()

  public boolean supportsReloading();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
         0: .line 70
            iconst_1
            ireturn
        end local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;

  public void close();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
         0: .line 75
            aload 0 /* this */
            getfield com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.source:Lcom/datastax/oss/driver/api/core/config/OptionsMap;
            aload 0 /* this */
            invokevirtual com.datastax.oss.driver.api.core.config.OptionsMap.removeChangeListener:(Ljava/util/function/Consumer;)Z
            pop
         1: .line 76
            return
        end local 0 // com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/datastax/oss/driver/internal/core/config/map/MapBasedDriverConfigLoader;

  public void accept(java.lang.Object);
    descriptor: (Ljava/lang/Object;)V
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast com.datastax.oss.driver.api.core.config.OptionsMap
            invokevirtual com.datastax.oss.driver.internal.core.config.map.MapBasedDriverConfigLoader.accept:(Lcom/datastax/oss/driver/api/core/config/OptionsMap;)V
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Lcom/datastax/oss/driver/api/core/config/DriverConfigLoader;Ljava/util/function/Consumer<Lcom/datastax/oss/driver/api/core/config/OptionsMap;>;
SourceFile: "MapBasedDriverConfigLoader.java"