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   1 package ch.dvbern.demo.persistence;
   2
   3 import java.util.Locale;
   4
   5 import org.hibernate.boot.model.naming.Identifier;
   6 import org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl;
   7 import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
   8
   9 public class DemoPhysicalNamingStrategyImpl extends PhysicalNamingStrategyStandardImpl {
  10
  11         private static final long serialVersionUID = 7069586216789441113L;
  12
  13         public static final DemoPhysicalNamingStrategyImpl INSTANCE = new DemoPhysicalNamingStrategyImpl();
  14
  15         @Override
  16         public Identifier toPhysicalTableName(Identifier name, JdbcEnvironment context) {
  17                 return new Identifier(addUnderscores(name.getText()), name.isQuoted());
  18         }
  19
  20         @Override
  21         public Identifier toPhysicalColumnName(Identifier name, JdbcEnvironment context) {
  22                 return new Identifier(addUnderscores(name.getText()), name.isQuoted());
  23         }
  24
  25
  26         protected static String addUnderscores(String name) {
  27                 final StringBuilder buf = new StringBuilder(name.replace('.', '_'));
  28                 for (int i = 1; i < buf.length() - 1; i++) {
  29                         if (Character.isLowerCase(buf.charAt(i - 1)) && Character.isUpperCase(buf.charAt(i))
  30                                         && Character.isLowerCase(buf.charAt(i + 1))) {
  31                                 buf.insert(i++, '_');
  32                         }
  33                 }
  34                 return buf.toString().toLowerCase(Locale.ROOT);
  35         }
  36 }