Example usage for org.hibernate.hql.internal.ast.tree FromElement getRole

Introduction

In this page you can find the example usage for org.hibernate.hql.internal.ast.tree FromElement getRole.

Prototype

public String getRole() 

Source Link

Usage

From source file:org.babyfish.hibernate.hql.XQueryTranslatorImpl.java

License:Open Source License

@SuppressWarnings("unchecked")
protected void onProcessCountSqlAST(AST sqlAst, boolean distinct) {
    QueryNode queryNode = (QueryNode) sqlAst;
    Set<FromElement> usedFromElements = new HashSet<>(ReferenceEqualityComparator.getInstance());
    for (FromElement fromElement : (List<FromElement>) queryNode.getFromClause().getFromElements()) {
        if (fromElement.getClass() == FromElement.class && fromElement.getWithClauseFragment() == null) {
            if (distinct || fromElement.getQueryableCollection() == null) {
                if (fromElement.getText().startsWith("left ")) {
                    continue;
                } else if (fromElement.getRole() != null && fromElement.getQueryableCollection() == null
                        && SettingsFactory.isDbSchemaStrict(this.factory.getProperties())) {
                    String role = fromElement.getRole();
                    int lastDotIndex = role.lastIndexOf('.');
                    String entityName = role.substring(0, lastDotIndex);
                    String propertyName = role.substring(lastDotIndex + 1);
                    EntityMetamodel entityMetamodel = this.factory.getEntityPersister(entityName)
                            .getEntityMetamodel();
                    int propertyIndex = entityMetamodel.getPropertyIndex(propertyName);
                    if (entityMetamodel.getPropertyTypes()[propertyIndex] instanceof ManyToOneType) {
                        boolean nullable = entityMetamodel.getPropertyNullability()[propertyIndex];
                        if (!nullable) {
                            continue;
                        }/*from   w  ww .  j  ava  2s.c o  m*/
                    }
                }
            }
        }
        SqlASTHelper.addFromElementAndancestors(usedFromElements, fromElement);
    }
    SqlASTHelper.removeFromElementsExcept(queryNode, usedFromElements);
}

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