core/src/main/java/com/orientechnologies/orient/core/sql/parser/JavaCharStream.java
public void ReInit(java.io.InputStream dstream, int startline,
  int startcolumn, int buffersize)
  {
    ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
  }
public void ReInit(java.io.InputStream dstream, int startline,
  int startcolumn, int buffersize)
  {
    ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
  }
Reinitialise.