import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
@Override
public Long execute() {
    JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
    return jdbcTemplate.execute(new ConnectionCallback<Long>() {
        @Override
        public Long doInConnection(Connection connection) throws SQLException, DataAccessException {
            final SQLDeleteClause deleteClause = new SQLDeleteClause(connection, configuration, pathBase);
            for (BooleanExpression expression : QueryExampleHelper.getExpressions(pathBase, example)) {
                deleteClause.where(expression);
            }
            for (SQLBindings sqlBindings : deleteClause.getSQL()) {
                LOGGER.debug("SQL: {} \nparams: {}", sqlBindings.getSQL(), sqlBindings.getBindings());
            }
            return deleteClause.execute();
        }
    });
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
@Override
@Transactional(readOnly=false)
public void updateLinks(Long initiativeId, List<Link> links) {
    List<Long> linkIds = Lists.newArrayList();
    for (Link link : links) {
        if (!link.isDeleted()) {
            Long linkId = link.getId();
            if (linkId != null) {
                updateLink(link, initiativeId);
            } else {
                linkId = insertLink(link, initiativeId);
            }
            linkIds.add(linkId);
        }
    }
    // Delete other (i.e. removed) links
    SQLDeleteClause delete = queryFactory
            .delete(qInitiativeLink)
            .where(qInitiativeLink.initiativeId.eq(initiativeId));
    
    if (!linkIds.isEmpty()) {
        delete.where(qInitiativeLink.id.notIn(linkIds));
    }
    
    delete.execute();
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
@Override
@Transactional(readOnly=false)
public void removeInvitation(Long initiativeId, String invitationCode) {
    Assert.notNull(initiativeId, "initiativeId");
    Assert.notNull(invitationCode, "invitationCode");

    SQLDeleteClause delete = queryFactory
            .delete(qInvitation)
            .where(qInvitation.initiativeId.eq(initiativeId), 
                   qInvitation.invitationcode.eq(invitationCode),
                   qInvitation.sent.isNotNull());
    
    if (delete.execute() != 1) {
        throw new NotFoundException(qInvitation.getTableName(), initiativeId + ":" + invitationCode);
    }
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
@Override
public long deleteAll(final Predicate predicate) {
	return jdbcTemplate.execute(new ConnectionCallback<Long>(){
		public Long doInConnection(Connection con) throws SQLException, DataAccessException {
			SQLDeleteClause query = new SQLDeleteClause(con, dialect, null);
			applyWhere(query, predicate);
			return query.execute();
		}
	});
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
private void updateInvitations(Long initiativeId, List<Invitation> unsentInvitations, AuthorRole role) {
    List<Long> invitationIds = Lists.newArrayList();
    for (Invitation invitation : unsentInvitations) {
        if (!invitation.isDeleted()) {
            invitation.assignRole(role);
            Long invitationId = invitation.getId();
            if (invitationId != null) {
                updateUnsentInvitation(initiativeId, invitation);
            } else {
                invitationId = insertInvitation(initiativeId, invitation);
            }
            invitationIds.add(invitationId);
        }
    }
    // Delete other (i.e. removed) unsent invitations
    SQLDeleteClause delete = queryFactory
            .delete(qInvitation)
            .where(qInvitation.initiativeId.eq(initiativeId), 
                   qInvitation.role.eq(role),
                   qInvitation.sent.isNull());
    
    if (!invitationIds.isEmpty()) {
        delete.where(qInvitation.id.notIn(invitationIds));
    }
    
    delete.execute();
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
@Override
@Transactional(readOnly=false)
public void deleteAuthor(Long initiativeId, Long userId) {
    SQLDeleteClause delete = queryFactory.delete(qAuthor)
            .where(qAuthor.initiativeId.eq(initiativeId), qAuthor.userId.eq(userId));

    if (delete.execute() != 1) {
        throw new NotFoundException("author", initiativeId + ":" + userId);
    }
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
@Override
@Transactional(readOnly=false)
public void removeInvitations(Long initiativeId) {
    Assert.notNull(initiativeId, "initiativeId");
    
    //remove all remaining invitations from initiative: unsent, unanswered and expired  
    SQLDeleteClause delete = queryFactory
            .delete(qInvitation)
            .where(qInvitation.initiativeId.eq(initiativeId));
    
    delete.execute(); // no need to check removed count, since it can be anything between 0 and n
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
@Override
@Transactional(readOnly=false)
public void removeUnconfirmedAuthors(Long initiativeId) {
    Assert.notNull(initiativeId, "initiativeId");
    
    SQLDeleteClause delete = queryFactory
            .delete(qAuthor)
            .where(qAuthor.initiativeId.eq(initiativeId),
                   qAuthor.confirmed.isNull());
    
    delete.execute(); // no need to check removed count, since it can be anything between 0 and n
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
public SQLDeleteClause getDeleteCluase(RelationalPath path) {
    return new SQLDeleteClause(connection, MySQLTemplates.DEFAULT, path);
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
public void deleteCoupon(String name) {
    QCoupon c = QCoupon.coupon;
    SQLDeleteClause clause = DatabaseManager.getInstance().getDeleteCluase(c);

    clause.where(c.couponName.eq(name)).execute();
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
private Object executePerformDelete(PerformDelete query) {
	SQLDeleteClause delete = delete(query.getEntity());
	
	return delete.where(query.getMetadata().getWhere()).execute();
}
 

import com.mysema.query.sql.dml.SQLDeleteClause; //导入依赖的package包/类
protected SQLDeleteClause delete(RelationalPath<?> entity) {
	return new SQLDeleteClause(connection, templates, entity);
}