Examples with SqmFromClause org.hibernate.query.sqm.tree.from.SqmFromClause used on opensource projects

Example 1 with SqmFromClause

use of org.hibernate.query.sqm.tree.from.SqmFromClause in project hibernate-orm by hibernate.

the class SqmSubQuery method getCorrelatedJoins.

@Override
public Set<Join<?, ?>> getCorrelatedJoins() {
    final Set<Join<?, ?>> correlatedJoins = new HashSet<>();
    final SqmFromClause fromClause = getQuerySpec().getFromClause();
    if (fromClause == null) {
        return correlatedJoins;
    }
    for (SqmRoot<?> root : fromClause.getRoots()) {
        if (root instanceof SqmCorrelation<?, ?>) {
            for (SqmJoin<?, ?> sqmJoin : root.getSqmJoins()) {
                if (sqmJoin instanceof SqmCorrelation<?, ?> && sqmJoin instanceof Join<?, ?>) {
                    correlatedJoins.add((Join<?, ?>) sqmJoin);
                }
            }
        }
    }
    return correlatedJoins;
}

Example 2 with SqmFromClause

use of org.hibernate.query.sqm.tree.from.SqmFromClause in project hibernate-orm by hibernate.

the class FromClauseTests method testSimpleFrom.

@Test
public void testSimpleFrom() {
    final SqmSelectStatement<?> selectStatement = interpretSelect("select p.nickName from Person p");
    final SqmFromClause fromClause = selectStatement.getQuerySpec().getFromClause();
    assertThat(fromClause, notNullValue());
    assertThat(fromClause.getRoots(), hasSize(1));
    final SqmRoot<?> firstRoot = fromClause.getRoots().get(0);
    assertThat(firstRoot, notNullValue());
    assertThat(firstRoot.getJoins(), isEmpty());
    assertThat(firstRoot.getExplicitAlias(), is("p"));
}

Example 3 with SqmFromClause

use of org.hibernate.query.sqm.tree.from.SqmFromClause in project hibernate-orm by hibernate.

the class FromClauseTests method testFromElementReferenceInSelect.

@Test
public void testFromElementReferenceInSelect() {
    final String query = "select p from Person p";
    SqmSelectStatement<?> selectStatement = interpretSelect(query);
    final SqmFromClause fromClause = selectStatement.getQuerySpec().getFromClause();
    assertThat(fromClause, notNullValue());
    assertThat(fromClause.getRoots(), hasSize(1));
    final SqmRoot<?> sqmRoot = fromClause.getRoots().get(0);
    assertThat(sqmRoot, notNullValue());
    assertThat(selectStatement.getQuerySpec().getSelectClause().getSelections(), hasSize(1));
    final SqmSelection<?> sqmSelection = selectStatement.getQuerySpec().getSelectClause().getSelections().get(0);
    assertThat(sqmSelection.getSelectableNode(), instanceOf(SqmRoot.class));
}

Example 4 with SqmFromClause

use of org.hibernate.query.sqm.tree.from.SqmFromClause in project hibernate-orm by hibernate.

the class FromClauseTests method testMultipleSpaces.

@Test
public void testMultipleSpaces() {
    final SqmSelectStatement<?> selectStatement = interpretSelect("select p.nickName from Person p, Person p2");
    final SqmFromClause fromClause = selectStatement.getQuerySpec().getFromClause();
    assertNotNull(fromClause);
    assertThat(fromClause, notNullValue());
    assertThat(fromClause.getRoots(), hasSize(2));
    final SqmRoot<?> firstRoot = fromClause.getRoots().get(0);
    assertThat(firstRoot, notNullValue());
    assertThat(firstRoot.getJoins(), isEmpty());
    assertThat(firstRoot.getExplicitAlias(), is("p"));
    final SqmRoot<?> secondRoot = fromClause.getRoots().get(0);
    assertThat(secondRoot, notNullValue());
    assertThat(secondRoot.getJoins(), isEmpty());
    assertThat(secondRoot.getExplicitAlias(), is("p"));
}

Example 5 with SqmFromClause

use of org.hibernate.query.sqm.tree.from.SqmFromClause in project hibernate-orm by hibernate.

the class FromClauseTests method testPathExpression.

@Test
public void testPathExpression() {
    final String query = "select p.mate from Person p";
    SqmSelectStatement<?> selectStatement = interpretSelect(query);
    final SqmFromClause fromClause = selectStatement.getQuerySpec().getFromClause();
    assertThat(fromClause, notNullValue());
    assertThat(fromClause.getRoots(), hasSize(1));
    final SqmRoot<?> sqmRoot = fromClause.getRoots().get(0);
    assertThat(sqmRoot, notNullValue());
    assertThat(sqmRoot.getExplicitAlias(), is("p"));
    assertThat(sqmRoot.getSqmJoins(), hasSize(0));
}