Package org.apache.cayenne.query

# Class EJBQLQuery

java.lang.Object
org.apache.cayenne.query.CacheableQuery
org.apache.cayenne.query.EJBQLQuery

All Implemented Interfaces:
  `Serializable`, `Query`

public class EJBQLQuery extends CacheableQuery
An EJBQL query representation in Cayenne.

Since:
  3.0
See Also:
  - Serialized Form

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `protected String`
  `ejbqlStatement`
  `protected EJBQLCompiledExpression`
  `expression`
  `protected Map<String,Object>`
  `namedParameters`
  `protected Map<Integer,Object>`
  `positionalParameters`

  ### Fields inherited from class org.apache.cayenne.query.CacheableQuery

  `logger`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `EJBQLQuery()`
  `EJBQLQuery(String ejbqlStatement)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `SQLAction`
  `createSQLAction(SQLActionVisitor visitor)`
  A callback method invoked by Cayenne during the final execution phase of the query run.
  `protected org.apache.cayenne.query.BaseQueryMetadata`
  `getBaseMetaData()`
  `String`
  `getEjbqlStatement()`
  Returns an unparsed EJB QL statement used to initialize this query.
  `EJBQLCompiledExpression`
  `getExpression(EntityResolver resolver)`
  Returns lazily initialized EJBQLCompiledExpression for this query EJBQL.
  `int`
  `getFetchLimit()`
  Returns the fetchLimit property indicating the maximum number of rows this query would return.
  `int`
  `getFetchOffset()`
  `QueryMetadata`
  `getMetaData(EntityResolver resolver)`
  Returns query runtime parameters.
  `Map<String,Object>`
  `getNamedParameters()`
  Returns unmodifiable map of combined named and positional parameters.
  `int`
  `getPageSize()`
  `Map<Integer,Object>`
  `getPositionalParameters()`
  `int`
  `getQueryTimeout()`
  `int`
  `getStatementFetchSize()`
  `void`
  `initWithProperties(Map<String,?> properties)`
  `boolean`
  `isFetchingDataRows()`
  `void`
  `route(QueryRouter router, EntityResolver resolver, Query substitutedQuery)`
  A callback method invoked by Cayenne during the routing phase of the query execution.
  `void`
  `setEjbqlStatement(String text)`
  `void`
  `setFetchingDataRows(boolean flag)`
  `void`
  `setFetchLimit(int fetchLimit)`
  Sets the fetchLimit property indicating the maximum number of rows this query would return.
  `void`
  `setFetchOffset(int fetchOffset)`
  `void`
  `setPageSize(int pageSize)`
  `void`
  `setParameter(int position, Object object)`
  Sets a positional query parameter value.
  `void`
  `setParameter(String name, Object object)`
  Sets a named query parameter value.
  `void`
  `setQueryTimeout(int queryTimeout)`
  Sets query timeout.
  `void`
  `setStatementFetchSize(int size)`
  Sets statement's fetch size (0 for no default size)

  ### Methods inherited from class org.apache.cayenne.query.CacheableQuery

  `getCacheGroup, getCacheStrategy, setCacheGroup, setCacheStrategy, useLocalCache, useLocalCache, useSharedCache, useSharedCache`

  ### Methods inherited from class java.lang.Object

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

- ## Field Details

  - ### ejbqlStatement

    protected String ejbqlStatement

  - ### namedParameters

    protected Map<String,Object> namedParameters

  - ### positionalParameters

    protected Map<Integer,Object> positionalParameters

  - ### expression

    protected transient EJBQLCompiledExpression expression

- ## Constructor Details

  - ### EJBQLQuery

    public EJBQLQuery(String ejbqlStatement)

  - ### EJBQLQuery

    public EJBQLQuery()

- ## Method Details

  - ### initWithProperties

    public void initWithProperties(Map<String,?> properties)

  - ### getMetaData

    public QueryMetadata getMetaData(EntityResolver resolver)
    Description copied from interface: `Query`
    Returns query runtime parameters. The method is called at various stages of the execution by Cayenne access stack to retrieve query parameters. EntityResolver instance is passed to this method, meaning that the query doesn't need to store direct references to Cayenne mapping objects and can resolve them at runtime.

  - ### isFetchingDataRows

    public boolean isFetchingDataRows()

  - ### setFetchingDataRows

    public void setFetchingDataRows(boolean flag)

  - ### getBaseMetaData

    protected org.apache.cayenne.query.BaseQueryMetadata getBaseMetaData()
    Specified by:
      `getBaseMetaData` in class `CacheableQuery`

  - ### route

    public void route(QueryRouter router, EntityResolver resolver, Query substitutedQuery)
    Description copied from interface: `Query`
    A callback method invoked by Cayenne during the routing phase of the query execution. Mapping of DataNodes is provided by QueryRouter. Query should use a `QueryRouter.route(QueryEngine, Query, Query)` callback method to route itself. Query can create one or more substitute queries or even provide its own QueryEngine to execute itself.

  - ### createSQLAction

    public SQLAction createSQLAction(SQLActionVisitor visitor)
    Description copied from interface: `Query`
    A callback method invoked by Cayenne during the final execution phase of the query run. A concrete query implementation is given a chance to decide how it should be handled. Implementors can pick an appropriate method of the SQLActionVisitor to handle itself, create a custom SQLAction of its own, or substitute itself with another query that should be used for SQLAction construction.

  - ### getEjbqlStatement

    public String getEjbqlStatement()
    Returns an unparsed EJB QL statement used to initialize this query.

  - ### getExpression

    public EJBQLCompiledExpression getExpression(EntityResolver resolver) throws EJBQLException
    Returns lazily initialized EJBQLCompiledExpression for this query EJBQL.
    Throws:
      `EJBQLException`

  - ### getNamedParameters

    public Map<String,Object> getNamedParameters()
    Returns unmodifiable map of combined named and positional parameters. Positional parameter keys are Integers, while named parameter keys are strings.

  - ### getPositionalParameters

    public Map<Integer,Object> getPositionalParameters()

  - ### setParameter

    public void setParameter(String name, Object object)
    Sets a named query parameter value.

  - ### setParameter

    public void setParameter(int position, Object object)
    Sets a positional query parameter value. Note that parameter indexes are starting from 1.

  - ### getFetchLimit

    public int getFetchLimit()
    Returns the fetchLimit property indicating the maximum number of rows this query would return.

  - ### setFetchLimit

    public void setFetchLimit(int fetchLimit)
    Sets the fetchLimit property indicating the maximum number of rows this query would return.

  - ### getFetchOffset

    public int getFetchOffset()

  - ### setFetchOffset

    public void setFetchOffset(int fetchOffset)

  - ### setEjbqlStatement

    public void setEjbqlStatement(String text)

  - ### getPageSize

    public int getPageSize()

  - ### setPageSize

    public void setPageSize(int pageSize)

  - ### setStatementFetchSize

    public void setStatementFetchSize(int size)
    Sets statement's fetch size (0 for no default size)
    Since:
      3.0

  - ### getStatementFetchSize

    public int getStatementFetchSize()
    Returns:
      statement's fetch size
    Since:
      3.0

  - ### setQueryTimeout

    public void setQueryTimeout(int queryTimeout)
    Sets query timeout.
    Since:
      4.2

  - ### getQueryTimeout

    public int getQueryTimeout()
    Returns:
      query timeout
    Since:
      4.2