Package org.postgresql.core.v3

Class CompositeQuery

java.lang.Object
org.postgresql.core.v3.CompositeQuery
All Implemented Interfaces:
Query
class CompositeQuery extends Object implements Query
V3 Query implementation for queries that involve multiple statements. We split it up into one SimpleQuery per statement, and wrap the corresponding per-statement SimpleParameterList objects in a CompositeParameterList.

  • Field Details

    • subqueries

      private final SimpleQuery[] subqueries

    • offsets

      private final int[] offsets

  • Constructor Details

    • CompositeQuery

      CompositeQuery(SimpleQuery[] subqueries, int[] offsets)

  • Method Details

    • createParameterList

      public ParameterList createParameterList()
      Description copied from interface: Query
      Create a ParameterList suitable for storing parameters associated with this Query.

      If this query has no parameters, a ParameterList will be returned, but it may be a shared immutable object. If this query does have parameters, the returned ParameterList is a new list, unshared by other callers.

      Specified by:
      createParameterList in interface Query
      Returns:
      a suitable ParameterList instance for this query

    • toString

      public String toString(ParameterList parameters)
      Description copied from interface: Query
      Returns string representation of the query, substituting particular parameter values for parameter placeholders.

      Note: the method replaces the values on a best-effort basis as it might omit the replacements for parameters that can't be processed several times. For instance, InputStream can be processed only once.

      Specified by:
      toString in interface Query
      Parameters:
      parameters - a ParameterList returned by this Query's Query.createParameterList() method, or null to leave the parameter placeholders unsubstituted.
      Returns:
      string representation of this query

    • toString

      public String toString(ParameterList parameters, SqlSerializationContext context)
      Description copied from interface: Query
      Returns string representation of the query, substituting particular parameter values for parameter placeholders.
      Specified by:
      toString in interface Query
      Parameters:
      parameters - a ParameterList returned by this Query's Query.createParameterList() method, or null to leave the parameter placeholders unsubstituted.
      context - specifies configuration for converting the parameters to string
      Returns:
      string representation of this query

    • getNativeSql

      public String getNativeSql()
      Description copied from interface: Query
      Returns SQL in native for database format.
      Specified by:
      getNativeSql in interface Query
      Returns:
      SQL in native for database format

    • getSqlCommand

      public SqlCommand getSqlCommand()
      Description copied from interface: Query
      Returns properties of the query (sql keyword, and some other parsing info).
      Specified by:
      getSqlCommand in interface Query
      Returns:
      returns properties of the query (sql keyword, and some other parsing info) or null if not applicable

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • close

      public void close()
      Description copied from interface: Query
      Close this query and free any server-side resources associated with it. The resources may not be immediately deallocated, but closing a Query may make the deallocation more prompt.

      A closed Query should not be executed.

      Specified by:
      close in interface Query

    • getSubqueries

      public Query[] getSubqueries()
      Description copied from interface: Query
      Return a list of the Query objects that make up this query. If this object is already a SimpleQuery, returns null (avoids an extra array construction in the common case).
      Specified by:
      getSubqueries in interface Query
      Returns:
      an array of single-statement queries, or null if this object is already a single-statement query.

    • isStatementDescribed

      public boolean isStatementDescribed()
      Specified by:
      isStatementDescribed in interface Query

    • isEmpty

      public boolean isEmpty()
      Specified by:
      isEmpty in interface Query

    • getBatchSize

      public int getBatchSize()
      Description copied from interface: Query
      Get the number of times this Query has been batched.
      Specified by:
      getBatchSize in interface Query
      Returns:
      number of times addBatch() has been called.

    • getResultSetColumnNameIndexMap

      public Map<String,Integer> getResultSetColumnNameIndexMap()
      Description copied from interface: Query
      Get a map that a result set can use to find the index associated to a name.
      Specified by:
      getResultSetColumnNameIndexMap in interface Query
      Returns:
      null if the query implementation does not support this method.