Module: BDBXMLJE

Includes:
Java
Included in:
Persist
Defined in:
lib/models/modbdbxmlje.rb

Constant Summary collapse

DB_ROOT = 
db_path
DB_NAME = 





Instance Method Summary
collapse






Instance Method Details





#create_doc(msg, key) ⇒ Object










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# File 'lib/models/modbdbxmlje.rb', line 83

def create_doc(msg,key)
  #removed the transaction bit since causes error when running inside Tomcat under JRuby
  #txn = $man.createTransaction()
  a = $man.createDocument()
  a.setContent(msg)
  a.setName(key)
  $con.putDocument(key,msg)
  #$con.putDocument(txn,key,msg)
  #txn.commit()
end












#create_key_and_doc(msg) ⇒ Object










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# File 'lib/models/modbdbxmlje.rb', line 73

def create_key_and_doc(msg)
  key = UUID.new
  create_doc(msg,key)
  key
end












#find(query) ⇒ Object










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# File 'lib/models/modbdbxmlje.rb', line 105

def find(query)
  cxt = $man.createQueryContext()
  results = $man.query(query, cxt)
  if (results.size() == 0) then
    return nil
  end
  #results is essentially an array of result lines
  #a single result will span a number of output lines, e.g. outer joined
  #MTA info will appear with a CRLF separator
  #the following code makes up single logical result rows based on the lines between
  #successive pairs of {} braces
  #
  #it should be noted that the result set from the xqueries is intended to be
  #a valid ruby block
  #this allows the result to be used to instantiate an active record object
  #with no further manipulation required    
  rows = []
  i = 0
  while results.hasNext()
    if rows[i] == nil
      rows[i] = ""
    end
    r = results.next().asString()
    rows[i] << r.chomp
    if (r.match(']}'))
      i = i + 1
    end 
  end   
  rows
end












#read_doc(key) ⇒ Object










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# File 'lib/models/modbdbxmlje.rb', line 79

def read_doc(key)
  $con.getDocument(key).getContentAsString() 
end












#replace_doc(msg, key) ⇒ Object










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# File 'lib/models/modbdbxmlje.rb', line 94

def replace_doc(msg,key)
  #removed the transaction bit since causes error when running inside Tomcat under JRuby
  #txn = $man.createTransaction()
  #a = $con.getDocument(txn,key)
  a = $con.getDocument(key)
  a.setContent(msg)
  #$con.updateDocument(txn,a)
  $con.updateDocument(a)
  #txn.commit
end












#setup_env ⇒ Object










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# File 'lib/models/modbdbxmlje.rb', line 41

def setup_env
  #setup UUID state file
  UUID.config(:state_file => "#{DB_ROOT}/uuid.state",
                :sequence => rand(0x100000000),
                :mac_addr => '00:19:e3:36:60:f5')

  begin
    envConf = JEnvironmentConfig.new()
    envConf.setAllowCreate(true)
    envConf.setTransactional(true)
    envConf.setInitializeCache(true);      

    f = JFile.new(DB_ROOT)
    $env = JEnvironment.new(f, envConf);
    
    manConf = XmlManagerConfig.new()
    manConf.setAllowExternalAccess(true)
    $man = XmlManager.new($env,manConf)
    
    if (!File.exist?("#{DB_ROOT}/#{DB_NAME}"))
      $con = $man.createContainer(DB_NAME)
    else
      $con = $man.openContainer(DB_NAME)
    end
    
    $base = "."
  rescue NativeException => e
    puts "Native exception's cause: #{e.cause}"
    raise
  end
end