jodd.joy.page

Class DbPager

java.lang.Object

jodd.joy.page.DbPager

Direct Known Subclasses:

HsqlDbPager, MySqlPager

public abstract class DbPager
extends java.lang.Object

Database pager.

Constructor Summary

Constructors

Constructor and Description
DbPager()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract java.lang.String	buildCountSql(java.lang.String sql) Builds SQL for retrieving total number of results.
protected abstract java.lang.String	buildOrderSql(java.lang.String sql, java.lang.String column, boolean ascending) Builds order SQL string.
protected abstract java.lang.String	buildPageSql(java.lang.String sql, int from, int pageSize) Builds page SQL string.
<T> PageData<T>	page(PageRequest pageRequest, java.lang.String sql, java.util.Map params, java.lang.String[] sortColumns, java.lang.Class[] target) Performs the pagination.
protected <T> PageData<T>	page(java.lang.String sql, int page, int pageSize, java.util.Map params, int sort, java.lang.String[] sortColumns, java.lang.Class[] target) Pages given page.
protected java.lang.String	removeLastOrderBy(java.lang.String sql) Removes everything from last last order by.
protected java.lang.String	removeSelect(java.lang.String sql) Removes the first 'select' from the sql query.
protected java.lang.String	removeToFrom(java.lang.String sql) Removes the first part of the sql up to the 'from'.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DbPager

public DbPager()

Method Detail

page

public <T> PageData<T> page(PageRequest pageRequest,
                   java.lang.String sql,
                   java.util.Map params,
                   java.lang.String[] sortColumns,
                   java.lang.Class[] target)

Performs the pagination.

page

protected <T> PageData<T> page(java.lang.String sql,
                   int page,
                   int pageSize,
                   java.util.Map params,
                   int sort,
                   java.lang.String[] sortColumns,
                   java.lang.Class[] target)

Pages given page. No fix in case of out-of-bounds.

buildOrderSql

protected abstract java.lang.String buildOrderSql(java.lang.String sql,
                             java.lang.String column,
                             boolean ascending)

Builds order SQL string. Invoked before all other SQL modification.

buildPageSql

protected abstract java.lang.String buildPageSql(java.lang.String sql,
                            int from,
                            int pageSize)

Builds page SQL string. Returned SQL string may return more than pageSize elements, but only pageSize will be consumed.

buildCountSql

protected abstract java.lang.String buildCountSql(java.lang.String sql)

Builds SQL for retrieving total number of results.

removeSelect

protected java.lang.String removeSelect(java.lang.String sql)

Removes the first 'select' from the sql query.

removeToFrom

protected java.lang.String removeToFrom(java.lang.String sql)

Removes the first part of the sql up to the 'from'.

removeLastOrderBy

protected java.lang.String removeLastOrderBy(java.lang.String sql)

Removes everything from last last order by.