https://lucene.apache.org/lucene-parent/lucene-join: Lucene Join Module (The Apache Software Foundation) 
class org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight extends org.apache.lucene.search.FilterWeight
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight
  super_class: org.apache.lucene.search.FilterWeight
{
  private final org.apache.lucene.search.join.BitSetProducer parentsFilter;
    descriptor: Lorg/apache/lucene/search/join/BitSetProducer;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final boolean doScores;
    descriptor: Z
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(org.apache.lucene.search.Query, org.apache.lucene.search.Weight, org.apache.lucene.search.join.BitSetProducer, boolean);
    descriptor: (Lorg/apache/lucene/search/Query;Lorg/apache/lucene/search/Weight;Lorg/apache/lucene/search/join/BitSetProducer;Z)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=5, args_size=5
        start local 0 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight this
        start local 1 // org.apache.lucene.search.Query joinQuery
        start local 2 // org.apache.lucene.search.Weight parentWeight
        start local 3 // org.apache.lucene.search.join.BitSetProducer parentsFilter
        start local 4 // boolean doScores
         0: .line 89
            aload 0 /* this */
            aload 1 /* joinQuery */
            aload 2 /* parentWeight */
            invokespecial org.apache.lucene.search.FilterWeight.<init>:(Lorg/apache/lucene/search/Query;Lorg/apache/lucene/search/Weight;)V
         1: .line 90
            aload 0 /* this */
            aload 3 /* parentsFilter */
            putfield org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight.parentsFilter:Lorg/apache/lucene/search/join/BitSetProducer;
         2: .line 91
            aload 0 /* this */
            iload 4 /* doScores */
            putfield org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight.doScores:Z
         3: .line 92
            return
        end local 4 // boolean doScores
        end local 3 // org.apache.lucene.search.join.BitSetProducer parentsFilter
        end local 2 // org.apache.lucene.search.Weight parentWeight
        end local 1 // org.apache.lucene.search.Query joinQuery
        end local 0 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    4     0           this  Lorg/apache/lucene/search/join/ToChildBlockJoinQuery$ToChildBlockJoinWeight;
            0    4     1      joinQuery  Lorg/apache/lucene/search/Query;
            0    4     2   parentWeight  Lorg/apache/lucene/search/Weight;
            0    4     3  parentsFilter  Lorg/apache/lucene/search/join/BitSetProducer;
            0    4     4       doScores  Z
    MethodParameters:
               Name  Flags
      joinQuery      
      parentWeight   
      parentsFilter  
      doScores       

  public org.apache.lucene.search.Scorer scorer(org.apache.lucene.index.LeafReaderContext);
    descriptor: (Lorg/apache/lucene/index/LeafReaderContext;)Lorg/apache/lucene/search/Scorer;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=4, args_size=2
        start local 0 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight this
        start local 1 // org.apache.lucene.index.LeafReaderContext readerContext
         0: .line 99
            aload 0 /* this */
            getfield org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight.in:Lorg/apache/lucene/search/Weight;
            aload 1 /* readerContext */
            invokevirtual org.apache.lucene.search.Weight.scorer:(Lorg/apache/lucene/index/LeafReaderContext;)Lorg/apache/lucene/search/Scorer;
            astore 2 /* parentScorer */
        start local 2 // org.apache.lucene.search.Scorer parentScorer
         1: .line 101
            aload 2 /* parentScorer */
            ifnonnull 3
         2: .line 103
            aconst_null
            areturn
         3: .line 108
      StackMap locals: org.apache.lucene.search.Scorer
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight.parentsFilter:Lorg/apache/lucene/search/join/BitSetProducer;
            aload 1 /* readerContext */
            invokeinterface org.apache.lucene.search.join.BitSetProducer.getBitSet:(Lorg/apache/lucene/index/LeafReaderContext;)Lorg/apache/lucene/util/BitSet;
            astore 3 /* parents */
        start local 3 // org.apache.lucene.util.BitSet parents
         4: .line 109
            aload 3 /* parents */
            ifnonnull 6
         5: .line 111
            aconst_null
            areturn
         6: .line 114
      StackMap locals: org.apache.lucene.util.BitSet
      StackMap stack:
            new org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer
            dup
            aload 0 /* this */
            aload 2 /* parentScorer */
            aload 3 /* parents */
            aload 0 /* this */
            getfield org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight.doScores:Z
            invokespecial org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer.<init>:(Lorg/apache/lucene/search/Weight;Lorg/apache/lucene/search/Scorer;Lorg/apache/lucene/util/BitSet;Z)V
            areturn
        end local 3 // org.apache.lucene.util.BitSet parents
        end local 2 // org.apache.lucene.search.Scorer parentScorer
        end local 1 // org.apache.lucene.index.LeafReaderContext readerContext
        end local 0 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    7     0           this  Lorg/apache/lucene/search/join/ToChildBlockJoinQuery$ToChildBlockJoinWeight;
            0    7     1  readerContext  Lorg/apache/lucene/index/LeafReaderContext;
            1    7     2   parentScorer  Lorg/apache/lucene/search/Scorer;
            4    7     3        parents  Lorg/apache/lucene/util/BitSet;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
               Name  Flags
      readerContext  

  public org.apache.lucene.search.Explanation explain(org.apache.lucene.index.LeafReaderContext, int);
    descriptor: (Lorg/apache/lucene/index/LeafReaderContext;I)Lorg/apache/lucene/search/Explanation;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=5, args_size=3
        start local 0 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight this
        start local 1 // org.apache.lucene.index.LeafReaderContext context
        start local 2 // int doc
         0: .line 119
            aload 0 /* this */
            aload 1 /* context */
            invokevirtual org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight.scorer:(Lorg/apache/lucene/index/LeafReaderContext;)Lorg/apache/lucene/search/Scorer;
            checkcast org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer
            astore 3 /* scorer */
        start local 3 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer scorer
         1: .line 120
            aload 3 /* scorer */
            ifnull 7
            aload 3 /* scorer */
            invokevirtual org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer.iterator:()Lorg/apache/lucene/search/DocIdSetIterator;
            iload 2 /* doc */
            invokevirtual org.apache.lucene.search.DocIdSetIterator.advance:(I)I
            iload 2 /* doc */
            if_icmpne 7
         2: .line 121
            aload 3 /* scorer */
            invokevirtual org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer.getParentDoc:()I
            istore 4 /* parentDoc */
        start local 4 // int parentDoc
         3: .line 123
            aload 3 /* scorer */
            invokevirtual org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer.score:()F
            invokestatic java.lang.Float.valueOf:(F)Ljava/lang/Float;
         4: .line 124
            getstatic java.util.Locale.ROOT:Ljava/util/Locale;
            ldc "Score based on parent document %d"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            iload 4 /* parentDoc */
            aload 1 /* context */
            getfield org.apache.lucene.index.LeafReaderContext.docBase:I
            iadd
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            aastore
            invokestatic java.lang.String.format:(Ljava/util/Locale;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
            iconst_1
            anewarray org.apache.lucene.search.Explanation
            dup
            iconst_0
         5: .line 125
            aload 0 /* this */
            getfield org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight.in:Lorg/apache/lucene/search/Weight;
            aload 1 /* context */
            iload 4 /* parentDoc */
            invokevirtual org.apache.lucene.search.Weight.explain:(Lorg/apache/lucene/index/LeafReaderContext;I)Lorg/apache/lucene/search/Explanation;
            aastore
         6: .line 122
            invokestatic org.apache.lucene.search.Explanation.match:(Ljava/lang/Number;Ljava/lang/String;[Lorg/apache/lucene/search/Explanation;)Lorg/apache/lucene/search/Explanation;
            areturn
        end local 4 // int parentDoc
         7: .line 128
      StackMap locals: org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer
      StackMap stack:
            ldc "Not a match"
            iconst_0
            anewarray org.apache.lucene.search.Explanation
            invokestatic org.apache.lucene.search.Explanation.noMatch:(Ljava/lang/String;[Lorg/apache/lucene/search/Explanation;)Lorg/apache/lucene/search/Explanation;
            areturn
        end local 3 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer scorer
        end local 2 // int doc
        end local 1 // org.apache.lucene.index.LeafReaderContext context
        end local 0 // org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    8     0       this  Lorg/apache/lucene/search/join/ToChildBlockJoinQuery$ToChildBlockJoinWeight;
            0    8     1    context  Lorg/apache/lucene/index/LeafReaderContext;
            0    8     2        doc  I
            1    8     3     scorer  Lorg/apache/lucene/search/join/ToChildBlockJoinQuery$ToChildBlockJoinScorer;
            3    7     4  parentDoc  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
         Name  Flags
      context  
      doc      
}
SourceFile: "ToChildBlockJoinQuery.java"
NestHost: org.apache.lucene.search.join.ToChildBlockJoinQuery
InnerClasses:
  ToChildBlockJoinScorer = org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinScorer of org.apache.lucene.search.join.ToChildBlockJoinQuery
  private ToChildBlockJoinWeight = org.apache.lucene.search.join.ToChildBlockJoinQuery$ToChildBlockJoinWeight of org.apache.lucene.search.join.ToChildBlockJoinQuery