Package cronapi.database

Class DataSource

  • All Implemented Interfaces:
    com.fasterxml.jackson.databind.JsonSerializable
    public class DataSource
extends Object
implements com.fasterxml.jackson.databind.JsonSerializable
    Class database manipulation, responsible for querying, inserting, updating and deleting database data procedurally, allowing paged navigation and setting page size.
    Since:
    2017-04-26
    Version:
    1.0
    Author:
    robson.ataide

    • Constructor Detail

      • DataSource

        public DataSource​(String entity)
        Init a datasource with a page size equals 100
        Parameters:
        entity - - full name of entitiy class like String

      • DataSource

        public DataSource​(com.google.gson.JsonObject query)

      • DataSource

        public DataSource​(String entity,
                  javax.persistence.EntityManager entityManager)
        Init a datasource with a page size equals 100, and custom entity manager
        Parameters:
        entity - - full name of entitiy class like String
        entityManager - - custom entity manager

      • DataSource

        public DataSource​(String entity,
                  int pageSize)
        Init a datasource setting a page size
        Parameters:
        entity - - full name of entitiy class like String
        pageSize - - page size of a Pageable object retrieved from repository

    • Method Detail

      • getEntityManager

        public javax.persistence.EntityManager getEntityManager​(Class domainClass)

      • getDomainClass

        public Class getDomainClass()

      • getSimpleEntity

        public String getSimpleEntity()

      • getEntity

        public String getEntity()

      • count

        public long count()

      • fetch

        public Object[] fetch()
        Retrieve objects from database using repository when filter is null or empty, if filter not null or is not empty, this method uses entityManager and create a jpql instruction.
        Returns:
        a array of Object

      • fetch

        public Object[] fetch​(boolean isCount)

      • insert

        public void insert()
        Create a new instance of entity and add a results and set current (index) for his position

      • toObject

        public Object toObject​(Map<?,​?> values)

      • insert

        public void insert​(Object value)

      • save

        public Object save​(boolean returnCursorAfterInsert)

      • save

        public Object save​(boolean returnCursorAfterInsert,
                   boolean returnRefreshed)
        Saves the object in the current index or a new object when has insertedElement

      • saveAfterCommit

        public Object saveAfterCommit​(org.eclipse.persistence.internal.sessions.AbstractSession session)

      • delete

        public void delete​(Var[] primaryKeys)

      • delete

        public void delete()
        Removes the object in the current index

      • updateField

        public void updateField​(String fieldName,
                        Object fieldValue)
        Update a field from object in the current index
        Parameters:
        fieldName - - attributte name in entity
        fieldValue - - value that replaced or inserted in field name passed

      • updateFields

        public void updateFields​(Var... fields)
        Update fields from object in the current index
        Parameters:
        fields - - bidimensional array like fields sample: { {"name", "Paul"}, {"age", "21"} }

      • filterByPk

        public void filterByPk​(Var[] params)

      • filter

        public void filter​(Var data,
                   Var[] extraParams)

      • update

        public void update​(Var data)

      • getObject

        public Object getObject()
        Return object in current index
        Returns:
        Object from database in current position

      • getObject

        public Object getObject​(String fieldName)
        Return field passed from object in current index
        Returns:
        Object value of field passed

      • next

        public void next()
        Moves the index for next position, in pageable case, looking for next page and so on

      • nextOnPage

        public void nextOnPage()
        Moves the index for next position, in pageable case, looking for next page and so on

      • hasNext

        public boolean hasNext()
        Verify if can moves the index for next position, in pageable case, looking for next page and so on
        Returns:
        boolean true if has next, false else

      • hasData

        public boolean hasData()

      • previous

        public boolean previous()
        Moves the index for previous position, in pageable case, looking for next page and so on
        Returns:
        boolean true if has previous, false else

      • setCurrent

        public void setCurrent​(int current)

      • getCurrent

        public int getCurrent()

      • getPage

        public org.springframework.data.domain.Page getPage()
        Gets a Pageable object retrieved from repository
        Returns:
        pageable from repository, returns null when fetched by filter

      • setPageSize

        public void setPageSize​(int pageSize)
        Create a new page request with size passed
        Parameters:
        pageSize - size of page request

      • filter

        public void filter​(String filter,
                   Var... params)
        Fetch objects from database by a filter
        Parameters:
        filter - jpql instruction like a namedQuery
        params - parameters used in jpql instruction

      • setDataSourceFilter

        public void setDataSourceFilter​(DataSourceFilter dsFilter)

      • filter

        public void filter​(String filter,
                   org.springframework.data.domain.PageRequest pageRequest,
                   Var... params)

      • alowFetchNext

        public void alowFetchNext​(boolean alowFetchNext)

      • deleteRelation

        public void deleteRelation​(String refId,
                           Var[] primaryKeys,
                           Var[] relationKeys)

      • insertRelation

        public Object insertRelation​(String refId,
                             Map<?,​?> data,
                             Var... primaryKeys)

      • resolveRelation

        public void resolveRelation​(String refId)

      • filterByRelation

        public void filterByRelation​(String refId,
                             org.springframework.data.domain.PageRequest pageRequest,
                             Var... primaryKeys)

      • clear

        public void clear()
        Clean Datasource and to free up allocated memory

      • execute

        public Var execute​(String query,
                   Var... params)
        Execute Query
        Parameters:
        query - - JPQL instruction for filter objects to remove
        params - - Bidimentional array with params name and params value

      • getTotalElements

        public Var getTotalElements()

      • serialize

        public void serialize​(com.fasterxml.jackson.core.JsonGenerator gen,
                      com.fasterxml.jackson.databind.SerializerProvider serializers)
               throws IOException
        Specified by:
        serialize in interface com.fasterxml.jackson.databind.JsonSerializable
        Throws:
        IOException

      • serializeWithType

        public void serializeWithType​(com.fasterxml.jackson.core.JsonGenerator gen,
                              com.fasterxml.jackson.databind.SerializerProvider serializers,
                              com.fasterxml.jackson.databind.jsontype.TypeSerializer typeSer)
                       throws IOException
        Specified by:
        serializeWithType in interface com.fasterxml.jackson.databind.JsonSerializable
        Throws:
        IOException

      • disableMultiTenant

        public void disableMultiTenant()

      • enableMultiTenant

        public void enableMultiTenant()

      • getFilter

        public String getFilter()

      • getIds

        public Var getIds()

      • getId

        public Var getId()

      • getObjectWithId

        public Object getObjectWithId​(Var[] ids)

      • validate

        public void validate​(String jpql)

      • isPlainData

        public boolean isPlainData()

      • setPlainData

        public void setPlainData​(boolean plainData)

      • useUrlParams

        public boolean useUrlParams()

      • setUseUrlParams

        public void setUseUrlParams​(boolean useUrlParams)

      • flush

        public void flush()

      • setUseOdataRequest

        public void setUseOdataRequest​(boolean useOdataRequest)

      • setUseOffset

        public void setUseOffset​(boolean useOffset)