[pgjdbc/pgjdbc] 177f63: perf: improve performance of replacing JDBC{...} ...

Branch: refs/heads/master
  Home:   https://github.com/pgjdbc/pgjdbc
  Commit: 177f63be788a80529bfa7c2234cfabb039cc29b4
      https://github.com/pgjdbc/pgjdbc/commit/177f63be788a80529bfa7c2234cfabb039cc29b4
  Author: Vladimir Sitnikov <sitnikov.vladimir@gmail.com>
  Date:   2018-06-29 (Fri, 29 Jun 2018)

  Changed paths:
    M pgjdbc/src/main/java/org/postgresql/core/Parser.java
    M pgjdbc/src/main/java/org/postgresql/jdbc/EscapedFunctions.java
    A pgjdbc/src/main/java/org/postgresql/jdbc/EscapedFunctions2.java
    M pgjdbc/src/test/java/org/postgresql/test/jdbc2/StatementTest.java

  Log Message:
  -----------
  perf: improve performance of replacing JDBC {...} escapes (#1230)

There are the key improvements:
1) Function arguments for {fn ...} were parsed twice
2) EscapedFunctions now appends data to existing StringBuilder instead of producing intermediate Strings
3) EscapedFunctions.getFunction avoids string concatenation (suggested by benbenw) and toLowerCase on a hot path

closes #1229



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