Example usage for javax.persistence.criteria Selection alias

Introduction

In this page you can find the example usage for javax.persistence.criteria Selection alias.

Prototype

Selection<X> alias(String name);

Source Link

Document

Assigns an alias to the selection item.

Usage

From source file:org.jdal.dao.jpa.JpaUtils.java

/**
 * Gets The result alias, if none set a default one and return it
 * @param selection /* w ww .  ja  v  a2  s . c om*/
 * @return root alias or generated one
 */
public static synchronized <T> String getOrCreateAlias(Selection<T> selection) {
    // reset alias count
    if (aliasCount > 1000)
        aliasCount = 0;

    String alias = selection.getAlias();
    if (alias == null) {
        alias = "JDAL_generatedAlias" + aliasCount++;
        selection.alias(alias);
    }
    return alias;

}

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From source file:com.zero.dao.impl.BaseDaoImpl.java

private synchronized String getAlias(Selection<?> selection) {
    if (selection != null) {
        String alias = selection.getAlias();
        if (alias == null) {
            if (aliasCount >= 1000) {
                aliasCount = 0;/*from  ww  w.j  av  a  2 s .  c  o m*/
            }
            alias = "shopxxGeneratedAlias" + aliasCount++;
            selection.alias(alias);
        }
        return alias;
    }
    return null;
}

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From source file:net.osxx.dao.impl.BaseDaoImpl.java

private synchronized String getAlias(Selection<?> selection) {
    if (selection != null) {
        String alias = selection.getAlias();
        if (alias == null) {
            if (aliasCount >= 1000) {
                aliasCount = 0;//from  w ww  .  ja va2 s.  com
            }
            alias = "osxxGeneratedAlias" + aliasCount++;
            selection.alias(alias);
        }
        return alias;
    }
    return null;
}

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From source file:com.dp2345.dao.impl.BaseDaoImpl.java

private synchronized String getAlias(Selection<?> selection) {
    if (selection != null) {
        String alias = selection.getAlias();
        if (alias == null) {
            if (aliasCount >= 1000) {
                aliasCount = 0;//from w w  w. j ava2  s . com
            }
            alias = "dp2345GeneratedAlias" + aliasCount++;
            selection.alias(alias);
        }
        return alias;
    }
    return null;
}

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From source file:gov.guilin.dao.impl.BaseDaoImpl.java

private synchronized String getAlias(Selection<?> selection) {
    if (selection != null) {
        String alias = selection.getAlias();
        if (alias == null) {
            if (aliasCount >= 1000) {
                aliasCount = 0;//from  w  w w .j  ava 2 s.  c om
            }
            alias = "guilinGeneratedAlias" + aliasCount++;
            selection.alias(alias);
        }
        return alias;
    }
    return null;
}

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From source file:net.groupbuy.dao.impl.BaseDaoImpl.java

private synchronized String getAlias(Selection<?> selection) {
    if (selection != null) {
        String alias = selection.getAlias();
        if (alias == null) {
            if (aliasCount >= 1000) {
                aliasCount = 0;//from w  w  w .  ja  va  2 s.  co  m
            }
            alias = "groupbuyGeneratedAlias" + aliasCount++;
            selection.alias(alias);
        }
        return alias;
    }
    return null;
}

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From source file:com.sammyun.dao.impl.BaseDaoImpl.java

private synchronized String getAlias(Selection<?> selection) {
    if (selection != null) {
        String alias = selection.getAlias();
        if (alias == null) {
            if (aliasCount >= 1000) {
                aliasCount = 0;//from w w  w. j a va  2  s .  c  o  m
            }
            alias = "preschoolEduGeneratedAlias" + aliasCount++;
            selection.alias(alias);
        }
        return alias;
    }
    return null;
}

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From source file:org.easy.criteria.CriteriaComposer.java

/**
 * @param out//  ww  w.j  a  va 2s . co m
 */
@SuppressWarnings("unchecked")
protected void generateSelect(final CriteriaBuilder criteriaBuilder, final List<Selection<?>> out) {
    Preconditions.checkNotNull(out);

    if (multiselect != null && multiselect.size() > 0) {
        out.addAll(multiselect);
    }

    if (_selects != null && _selects.size() > 0) {
        for (SelectContainer<E> selectContainer : _selects) {
            if (selectContainer.function == null) {
                Selection<?> selection = root.get(selectContainer.singularAttribute);
                selection.alias(selectContainer.alias);
                out.add(selection);
            } else {
                @SuppressWarnings("rawtypes")
                Expression numExp = null;
                switch (selectContainer.function) {
                case COUNT:
                    numExp = criteriaBuilder.count(root.get(selectContainer.singularAttribute));
                    numExp.alias(selectContainer.alias);
                    break;

                case AVG:
                    numExp = criteriaBuilder.avg(root.get(selectContainer.singularAttribute));
                    numExp.alias(selectContainer.alias);
                    break;

                case SUM:
                    numExp = criteriaBuilder.sum(root.get(selectContainer.singularAttribute));
                    numExp.alias(selectContainer.alias);
                    break;

                case MAX:
                    numExp = criteriaBuilder.max(root.get(selectContainer.singularAttribute));
                    numExp.alias(selectContainer.alias);
                    break;

                case MIN:
                    numExp = criteriaBuilder.min(root.get(selectContainer.singularAttribute));
                    numExp.alias(selectContainer.alias);
                    break;
                }

                if (numExp != null)
                    out.add(numExp);
            }

        }
    }

    if (_joins != null) {
        Set<Entry<JoinContainer<E>, CriteriaComposer<?>>> allSetJoins = _joins.entrySet();

        for (Entry<JoinContainer<E>, CriteriaComposer<?>> join : allSetJoins) {
            CriteriaComposer<?> subCriteria = join.getValue();

            if (subCriteria != null)
                subCriteria.generateSelect(criteriaBuilder, out);
        }
    }
}

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