[GitHub] [parquet-mr] shangxinli commented on a diff in pull request #960: Performance optimization: Move all LittleEndianDataInputStream functionality into ByteBufferInputStream

[GitBox <gi...@apache.org>]

shangxinli commented on code in PR #960:
URL: https://github.com/apache/parquet-mr/pull/960#discussion_r950903342


##########
parquet-common/src/main/java/org/apache/parquet/bytes/ByteBufferInputStream.java:
##########
@@ -157,4 +165,80 @@ public void reset() throws IOException {
   public boolean markSupported() {
     return delegate.markSupported();
   }
+
+  public boolean readBoolean() throws IOException {
+    return readByte() != 0;
+  }
+
+  public byte readByte() throws IOException {
+    return delegate.readByte();
+  }
+
+  public int readUnsignedByte() throws IOException {
+    return delegate.readUnsignedByte();
+  }
+
+  public short readShort() throws IOException {
+    return delegate.readShort();
+  }
+
+  public int readUnsignedShort() throws IOException {
+    return delegate.readUnsignedShort();
+  }
+
+  public int readInt() throws IOException {
+    return delegate.readInt();
+  }
+
+  public long readLong() throws IOException {
+    return delegate.readLong();
+  }
+
+  public float readFloat() throws IOException {
+    return Float.intBitsToFloat(readInt());
+  }
+
+  public double readDouble() throws IOException {
+    return Double.longBitsToDouble(readLong());
+  }
+
+  public int readIntLittleEndianOnThreeBytes() throws IOException {
+    int ch1 = readUnsignedByte();
+    int ch2 = readUnsignedByte();
+    int ch3 = readUnsignedByte();
+    return ((ch3 << 16) + (ch2 << 8) + (ch1 << 0));
+  }
+
+  public int readIntLittleEndianPaddedOnBitWidth(int bitWidth)

Review Comment:
   I meant the method here: https://github.com/apache/parquet-mr/blob/master/parquet-common/src/main/java/org/apache/parquet/bytes/BytesUtils.java#L120. It is exactly same but just different signature. 



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