/**
* Change the order of the tables to use Topological Order
*
* @access public
* @param CompositeInterface $compiler
* @param CompilerInterface $cmp
* @link using breath search algorithm first http://en.wikipedia.org/wiki/Topological_sorting
*/
public function process(CompositeInterface $composite, CompilerInterface $cmp)
{
$graph = $cmp->getGraph();
# Find table nodes with no out-edges.
foreach ($graph->getNodes() as $node) {
if ($node->getValue() instanceof TableNode || $node->getValue() instanceof FormatterNode) {
$tmp_nodes = $node->getOutEdges();
$table_node_count = 0;
# count how many outer edges are just tables
foreach ($tmp_nodes as $tmpnode) {
if ($tmpnode->getDestNode()->getValue() instanceof TableNode || $tmpnode->getDestNode()->getValue() instanceof FormatterNode) {
$table_node_count += 1;
}
}
# test if no tables found in outer edges
if ($table_node_count === 0) {
$this->nodesNoOutEdges[] = $node;
}
$tmp_nodes = null;
}
}
# Call breath first search on each table node with no outer-edges
# As we have a directed acyclic graph there is guarantee of minimum 1 node without outer-edges.
foreach ($this->nodesNoOutEdges as $node) {
$this->visitNode($node);
}
$this->sortComposite($composite, $this->newOrder);
# clear for another possible pass
$this->clear();
}
/**
* Will inject Cache into the composite
*
* The References should be valid as
* missing ones will not cause error, run KeysExistPass first
*
* @param CompositeInterface $composite
* @param CompilerInterface $cmp
*/
public function process(CompositeInterface $composite, CompilerInterface $cmp)
{
# find nodes that are Columns
foreach ($cmp->getGraph()->getNodes() as $node) {
$compositeNode = $node->getValue();
if ($compositeNode instanceof ColumnNode) {
$innerEdges = $node->getInEdges();
$cache = new GeneratorCache();
//once cache per column
#assign cache to foreign keys assocaited with this column.
foreach ($innerEdges as $inEdge) {
$compositeType = $inEdge->getSourceNode()->getValue();
if ($compositeType instanceof ForeignKeyNode) {
# set the cache if the silent option not true
# if all relations are set to silent no cache
# will be set on the original Column.
if ($compositeType->getUseCache() === true) {
$compositeType->setResultCache($cache);
# assign cache to column that assigned to the FK
# do it here as don't know if a column has foreignkeys
# until matched.
if ($compositeNode->getResultCache() === null) {
$compositeNode->setResultCache($cache);
}
}
}
}
}
}
}
/**
* Will Check the relationships for Circular References
*
* The References should be valid as
* missing ones will not cause error, run KeysExistPass first
*
* A circular reference means that b requires a and a requires b and impossible situation or
* a requires b and requires c but c requires a, a giant circle.
*
* @param CompositeInterface $composite
* @param CompilerInterface $cmp
*/
public function process(CompositeInterface $composite, CompilerInterface $cmp)
{
$graph = $cmp->getGraph();
foreach ($graph->getNodes() as $id => $node) {
$this->current_id = $id;
$this->current_path = array($id);
$this->checkOutEdges($node->getOutEdges());
}
}
/**
* Builds a SchemaNode
*
* @access public
* @return Faker\Components\Engine\DB\Composite/SchemaNode
*/
public function end()
{
$node = $this->getNode();
$children = $this->children();
$compiiler = $this->compiler;
foreach ($children as $child) {
$node->addChild($child);
}
# run validation routines
$this->event->dispatch(BuildEvents::onValidationStart, new BuildEvent($this, 'Started validation of entity ' . $this->name));
$node->validate();
$this->event->dispatch(BuildEvents::onValidationEnd, new BuildEvent($this, 'Finished validation of entity ' . $this->name));
# run compiler
$this->event->dispatch(BuildEvents::onCompileStart, new BuildEvent($this, 'Started compile of entity ' . $this->name));
$this->compiler->compile($node);
$this->event->dispatch(BuildEvents::onCompileEnd, new BuildEvent($this, 'Finished compile of entity ' . $this->name));
$this->event->dispatch(BuildEvents::onBuildingEnd, new BuildEvent($this, 'Finished build of entity ' . $this->name));
return $node;
}
