function generateBeforeContent($code_writer)
{
foreach ($this->_getExpressionsInTargetAttribute() as $expression) {
$dbe = new WactDataBindingExpressionNode($expression, $this, $this->parent);
$datasource = $dbe->getDatasourceContext();
$field_name = $dbe->getFieldName();
if ($field_name && !$datasource->isDatasource()) {
$this->raiseCompilerError('Wrong datasource path in target or to attribute', array('expression' => $expression));
}
if (count($dbe->getPathToTargetDatasource())) {
$this->raiseCompilerError('Path based variable is not supported in target or to attribute', array('expression' => $expression));
}
$code_writer->writePHP($datasource->getComponentRefCode() . '->registerDatasource(');
$this->attributeNodes['from']->generateExpression($code_writer);
$code_writer->writePHP(');' . "\n");
}
}
protected function _processTargetAttribute($code_writer)
{
foreach ($this->_getExpressionsFromTargetAttribute() as $expression) {
$dbe = new WactDataBindingExpressionNode($expression, $this, $this->parent);
$datasource = $dbe->getDatasourceContext();
$field_name = $dbe->getFieldName();
if ($field_name && !$datasource->isDatasource()) {
$this->raiseCompilerError('Wrong DBE datasource context in buffer attribute', array('expression' => $expression));
}
if (count($dbe->getPathToTargetDatasource())) {
$this->raiseCompilerError('Path based variable name is not supported in buffer attribute', array('expression' => $expression));
}
$dbe->generatePreStatement($code_writer);
$code_writer->writePHP($this->getComponentRefCode() . '->addBuffer(');
$code_writer->writePHP($datasource->getComponentRefCode());
if ($field_name) {
$code_writer->writePHP(', "' . $field_name . '"');
}
$code_writer->writePHP(');' . "\n");
$dbe->generatePostStatement($code_writer);
}
}