How to use

ensureCapacity

method

in

org.springframework.core.io.buffer.DefaultDataBuffer

@Override
public DefaultDataBuffer write(byte b) {
  ensureCapacity(1);
  int pos = this.writePosition;
  this.byteBuffer.put(pos, b);
  this.writePosition = pos + 1;
  return this;
}

@Override
public DefaultDataBuffer write(ByteBuffer... buffers) {
  if (!ObjectUtils.isEmpty(buffers)) {
    int capacity = Arrays.stream(buffers).mapToInt(ByteBuffer::remaining).sum();
    ensureCapacity(capacity);
    Arrays.stream(buffers).forEach(this::write);
  }
  return this;
}

@Override
public DefaultDataBuffer write(byte b) {
  ensureCapacity(1);
  int pos = this.writePosition;
  this.byteBuffer.put(pos, b);
  this.writePosition = pos + 1;
  return this;
}

@Override
public DefaultDataBuffer write(byte[] source, int offset, int length) {
  Assert.notNull(source, "Byte array must not be null");
  ensureCapacity(length);
  ByteBuffer tmp = this.byteBuffer.duplicate();
  int limit = this.writePosition + length;
  ((Buffer) tmp).clear().position(this.writePosition).limit(limit);
  tmp.put(source, offset, length);
  this.writePosition += length;
  return this;
}

@Override
public DefaultDataBuffer write(ByteBuffer... buffers) {
  if (!ObjectUtils.isEmpty(buffers)) {
    int capacity = Arrays.stream(buffers).mapToInt(ByteBuffer::remaining).sum();
    ensureCapacity(capacity);
    Arrays.stream(buffers).forEach(this::write);
  }
  return this;
}

@Override
public DefaultDataBuffer write(byte[] source, int offset, int length) {
  Assert.notNull(source, "Byte array must not be null");
  ensureCapacity(length);
  ByteBuffer tmp = this.byteBuffer.duplicate();
  int limit = this.writePosition + length;
  ((Buffer) tmp).clear().position(this.writePosition).limit(limit);
  tmp.put(source, offset, length);
  this.writePosition += length;
  return this;
}

@Override
public DefaultDataBuffer write(byte b) {
  ensureCapacity(1);
  int pos = this.writePosition;
  this.byteBuffer.put(pos, b);
  this.writePosition = pos + 1;
  return this;
}

@Override
public DefaultDataBuffer write(byte b) {
  ensureCapacity(1);
  int pos = this.writePosition;
  this.byteBuffer.put(pos, b);
  this.writePosition = pos + 1;
  return this;
}

@Override
public DefaultDataBuffer write(ByteBuffer... byteBuffers) {
  Assert.notEmpty(byteBuffers, "'byteBuffers' must not be empty");
  int capacity = Arrays.stream(byteBuffers).mapToInt(ByteBuffer::remaining).sum();
  ensureCapacity(capacity);
  Arrays.stream(byteBuffers).forEach(this::write);
  return this;
}

@Override
public DefaultDataBuffer write(ByteBuffer... buffers) {
  if (!ObjectUtils.isEmpty(buffers)) {
    int capacity = Arrays.stream(buffers).mapToInt(ByteBuffer::remaining).sum();
    ensureCapacity(capacity);
    Arrays.stream(buffers).forEach(this::write);
  }
  return this;
}

@Override
public DefaultDataBuffer write(byte[] source, int offset, int length) {
  Assert.notNull(source, "'source' must not be null");
  ensureCapacity(length);
  ByteBuffer tmp = this.byteBuffer.duplicate();
  int limit = this.writePosition + length;
  ((Buffer) tmp).clear().position(this.writePosition).limit(limit);
  tmp.put(source, offset, length);
  this.writePosition += length;
  return this;
}

@Override
public DefaultDataBuffer write(byte[] source, int offset, int length) {
  Assert.notNull(source, "Byte array must not be null");
  ensureCapacity(length);
  ByteBuffer tmp = this.byteBuffer.duplicate();
  int limit = this.writePosition + length;
  ((Buffer) tmp).clear().position(this.writePosition).limit(limit);
  tmp.put(source, offset, length);
  this.writePosition += length;
  return this;
}