Examples with ExecutionContext org.datanucleus.ExecutionContext used on opensource projects

Example 21 with ExecutionContext

use of org.datanucleus.ExecutionContext in project datanucleus-rdbms by datanucleus.

the class FKListStore method updateElementFk.

/**
 * Utility to update a foreign-key in the element in the case of a unidirectional 1-N relationship.
 * @param ownerOP ObjectProvider for the owner
 * @param element The element to update
 * @param owner The owner object to set in the FK
 * @param index The index position (or -1 if not known)
 * @return Whether it was performed successfully
 */
private boolean updateElementFk(ObjectProvider ownerOP, Object element, Object owner, int index) {
    if (element == null) {
        return false;
    }
    ExecutionContext ec = ownerOP.getExecutionContext();
    String updateFkStmt = getUpdateFkStmt(element);
    boolean retval;
    try {
        ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
        SQLController sqlControl = storeMgr.getSQLController();
        try {
            PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, updateFkStmt, false);
            try {
                ComponentInfo elemInfo = getComponentInfoForElement(element);
                JavaTypeMapping ownerMapping = elemInfo.getOwnerMapping();
                JavaTypeMapping elemMapping = elemInfo.getDatastoreClass().getIdMapping();
                JavaTypeMapping orderMapping = elemInfo.getDatastoreClass().getExternalMapping(ownerMemberMetaData, MappingType.EXTERNAL_INDEX);
                int jdbcPosition = 1;
                if (owner == null) {
                    if (ownerMemberMetaData != null) {
                        ownerMapping.setObject(ec, ps, MappingHelper.getMappingIndices(jdbcPosition, ownerMapping), null, ownerOP, ownerMemberMetaData.getAbsoluteFieldNumber());
                    } else {
                        ownerMapping.setObject(ec, ps, MappingHelper.getMappingIndices(jdbcPosition, ownerMapping), null);
                    }
                    jdbcPosition += ownerMapping.getNumberOfDatastoreMappings();
                } else {
                    jdbcPosition = BackingStoreHelper.populateOwnerInStatement(ownerOP, ec, ps, jdbcPosition, this);
                }
                if (orderMapping != null) {
                    jdbcPosition = BackingStoreHelper.populateOrderInStatement(ec, ps, index, jdbcPosition, orderMapping);
                }
                if (relationDiscriminatorMapping != null) {
                    jdbcPosition = BackingStoreHelper.populateRelationDiscriminatorInStatement(ec, ps, jdbcPosition, this);
                }
                jdbcPosition = BackingStoreHelper.populateElementForWhereClauseInStatement(ec, ps, element, jdbcPosition, elemMapping);
                sqlControl.executeStatementUpdate(ec, mconn, updateFkStmt, ps, true);
                retval = true;
            } finally {
                sqlControl.closeStatement(mconn, ps);
            }
        } finally {
            mconn.release();
        }
    } catch (SQLException e) {
        throw new NucleusDataStoreException(Localiser.msg("056027", updateFkStmt), e);
    }
    return retval;
}

Example 22 with ExecutionContext

use of org.datanucleus.ExecutionContext in project datanucleus-rdbms by datanucleus.

the class FKListStore method listIterator.

/**
 * Accessor for an iterator through the list elements.
 * @param ownerOP ObjectProvider for the owner.
 * @param startIdx The start index in the list (only for indexed lists)
 * @param endIdx The end index in the list (only for indexed lists)
 * @return The List Iterator
 */
protected ListIterator<E> listIterator(ObjectProvider ownerOP, int startIdx, int endIdx) {
    ExecutionContext ec = ownerOP.getExecutionContext();
    Transaction tx = ec.getTransaction();
    if (elementInfo == null || elementInfo.length == 0) {
        return null;
    }
    // Generate the statement. Note that this is not cached since depends on the current FetchPlan and other things
    IteratorStatement iterStmt = getIteratorStatement(ownerOP.getExecutionContext(), ec.getFetchPlan(), true, startIdx, endIdx);
    SelectStatement sqlStmt = iterStmt.getSelectStatement();
    StatementClassMapping resultMapping = iterStmt.getStatementClassMapping();
    // Input parameter(s) - the owner
    int inputParamNum = 1;
    StatementMappingIndex ownerIdx = new StatementMappingIndex(ownerMapping);
    if (sqlStmt.getNumberOfUnions() > 0) {
        // Add parameter occurrence for each union of statement
        for (int j = 0; j < sqlStmt.getNumberOfUnions() + 1; j++) {
            int[] paramPositions = new int[ownerMapping.getNumberOfDatastoreMappings()];
            for (int k = 0; k < ownerMapping.getNumberOfDatastoreMappings(); k++) {
                paramPositions[k] = inputParamNum++;
            }
            ownerIdx.addParameterOccurrence(paramPositions);
        }
    } else {
        int[] paramPositions = new int[ownerMapping.getNumberOfDatastoreMappings()];
        for (int k = 0; k < ownerMapping.getNumberOfDatastoreMappings(); k++) {
            paramPositions[k] = inputParamNum++;
        }
        ownerIdx.addParameterOccurrence(paramPositions);
    }
    if (tx.getSerializeRead() != null && tx.getSerializeRead()) {
        sqlStmt.addExtension(SQLStatement.EXTENSION_LOCK_FOR_UPDATE, true);
    }
    String stmt = sqlStmt.getSQLText().toSQL();
    try {
        ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
        SQLController sqlControl = storeMgr.getSQLController();
        try {
            // Create the statement
            PreparedStatement ps = sqlControl.getStatementForQuery(mconn, stmt);
            // Set the owner
            ObjectProvider stmtOwnerOP = BackingStoreHelper.getOwnerObjectProviderForBackingStore(ownerOP);
            int numParams = ownerIdx.getNumberOfParameterOccurrences();
            for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
                ownerIdx.getMapping().setObject(ec, ps, ownerIdx.getParameterPositionsForOccurrence(paramInstance), stmtOwnerOP.getObject());
            }
            try {
                ResultSet rs = sqlControl.executeStatementQuery(ec, mconn, stmt, ps);
                try {
                    ResultObjectFactory rof = null;
                    if (elementsAreEmbedded || elementsAreSerialised) {
                        throw new NucleusException("Cannot have FK set with non-persistent objects");
                    }
                    rof = new PersistentClassROF(ec, rs, false, resultMapping, elementCmd, clr.classForName(elementType));
                    return new ListStoreIterator(ownerOP, rs, rof, this);
                } finally {
                    rs.close();
                }
            } finally {
                sqlControl.closeStatement(mconn, ps);
            }
        } finally {
            mconn.release();
        }
    } catch (SQLException | MappedDatastoreException e) {
        throw new NucleusDataStoreException(Localiser.msg("056006", stmt), e);
    }
}

Example 23 with ExecutionContext

use of org.datanucleus.ExecutionContext in project datanucleus-rdbms by datanucleus.

the class FKListStore method set.

/**
 * Method to set an object in the List at a position.
 * @param ownerOP ObjectProvider for the owner
 * @param index The item index
 * @param element What to set it to.
 * @param allowDependentField Whether to enable dependent-field deletes during the set
 * @return The value before setting.
 */
public E set(ObjectProvider ownerOP, int index, Object element, boolean allowDependentField) {
    // Last argument means don't set the position on any INSERT
    validateElementForWriting(ownerOP, element, -1);
    // Find the original element at this position
    E oldElement = null;
    List fieldVal = (List) ownerOP.provideField(ownerMemberMetaData.getAbsoluteFieldNumber());
    if (fieldVal != null && fieldVal instanceof BackedSCO && ((BackedSCO) fieldVal).isLoaded()) {
        // Already loaded in the wrapper
        oldElement = (E) fieldVal.get(index);
    } else {
        oldElement = get(ownerOP, index);
    }
    ManagedConnection mconn = null;
    try {
        ExecutionContext ec = ownerOP.getExecutionContext();
        SQLController sqlControl = storeMgr.getSQLController();
        mconn = storeMgr.getConnectionManager().getConnection(ec);
        // Unset the existing object from this position
        String theUnsetStmt = getUnsetStmt();
        try {
            PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, theUnsetStmt, false);
            try {
                int jdbcPosition = 1;
                jdbcPosition = BackingStoreHelper.populateOwnerInStatement(ownerOP, ec, ps, jdbcPosition, this);
                if (orderMapping != null) {
                    jdbcPosition = BackingStoreHelper.populateOrderInStatement(ec, ps, index, jdbcPosition, orderMapping);
                }
                if (relationDiscriminatorMapping != null) {
                    jdbcPosition = BackingStoreHelper.populateRelationDiscriminatorInStatement(ec, ps, jdbcPosition, this);
                }
                sqlControl.executeStatementUpdate(ec, mconn, theUnsetStmt, ps, true);
            } finally {
                sqlControl.closeStatement(mconn, ps);
            }
        } catch (SQLException e) {
            throw new NucleusDataStoreException(Localiser.msg("056015", theUnsetStmt), e);
        } finally {
        }
        // Set the new object at this position
        String theSetStmt = getSetStmt(element);
        try {
            PreparedStatement ps2 = sqlControl.getStatementForUpdate(mconn, theSetStmt, false);
            try {
                ComponentInfo elemInfo = getComponentInfoForElement(element);
                JavaTypeMapping elemMapping = this.elementMapping;
                JavaTypeMapping orderMapping = this.orderMapping;
                if (elemInfo != null) {
                    elemMapping = elemInfo.getDatastoreClass().getIdMapping();
                    orderMapping = elemInfo.getDatastoreClass().getExternalMapping(ownerMemberMetaData, MappingType.EXTERNAL_INDEX);
                }
                int jdbcPosition = 1;
                jdbcPosition = BackingStoreHelper.populateOwnerInStatement(ownerOP, ec, ps2, jdbcPosition, this);
                if (orderMapping != null) {
                    jdbcPosition = BackingStoreHelper.populateOrderInStatement(ec, ps2, index, jdbcPosition, orderMapping);
                }
                if (relationDiscriminatorMapping != null) {
                    jdbcPosition = BackingStoreHelper.populateRelationDiscriminatorInStatement(ec, ps2, jdbcPosition, this);
                }
                jdbcPosition = BackingStoreHelper.populateElementForWhereClauseInStatement(ec, ps2, element, jdbcPosition, elemMapping);
                sqlControl.executeStatementUpdate(ec, mconn, theSetStmt, ps2, true);
            } finally {
                sqlControl.closeStatement(mconn, ps2);
            }
        } catch (SQLException e) {
            throw new NucleusDataStoreException(Localiser.msg("056015", theSetStmt), e);
        }
    } finally {
        if (mconn != null) {
            mconn.release();
        }
    }
    // Dependent field
    boolean dependent = getOwnerMemberMetaData().getCollection().isDependentElement();
    if (getOwnerMemberMetaData().isCascadeRemoveOrphans()) {
        dependent = true;
    }
    if (dependent && allowDependentField) {
        if (oldElement != null) {
            // Delete the element if it is dependent and doesnt have a duplicate entry in the list
            ownerOP.getExecutionContext().deleteObjectInternal(oldElement);
        }
    }
    return oldElement;
}

Example 24 with ExecutionContext

use of org.datanucleus.ExecutionContext in project datanucleus-rdbms by datanucleus.

the class FKMapStore method updateValueFkInternal.

protected boolean updateValueFkInternal(ObjectProvider op, Object value, Object owner) {
    boolean retval;
    ExecutionContext ec = op.getExecutionContext();
    try {
        ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
        SQLController sqlControl = storeMgr.getSQLController();
        try {
            PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, updateFkStmt, false);
            try {
                int jdbcPosition = 1;
                if (owner == null) {
                    if (ownerMemberMetaData != null) {
                        ownerMapping.setObject(ec, ps, MappingHelper.getMappingIndices(1, ownerMapping), null, op, ownerMemberMetaData.getAbsoluteFieldNumber());
                    } else {
                        ownerMapping.setObject(ec, ps, MappingHelper.getMappingIndices(1, ownerMapping), null);
                    }
                    jdbcPosition += ownerMapping.getNumberOfDatastoreMappings();
                } else {
                    jdbcPosition = BackingStoreHelper.populateOwnerInStatement(op, ec, ps, jdbcPosition, this);
                }
                jdbcPosition = BackingStoreHelper.populateValueInStatement(ec, ps, value, jdbcPosition, valueMapping);
                sqlControl.executeStatementUpdate(ec, mconn, updateFkStmt, ps, true);
                retval = true;
            } finally {
                sqlControl.closeStatement(mconn, ps);
            }
        } finally {
            mconn.release();
        }
    } catch (SQLException e) {
        throw new NucleusDataStoreException(Localiser.msg("056027", updateFkStmt), e);
    }
    return retval;
}

Example 25 with ExecutionContext

use of org.datanucleus.ExecutionContext in project datanucleus-rdbms by datanucleus.

the class FKMapStore method updateKeyFkInternal.

protected boolean updateKeyFkInternal(ObjectProvider op, Object key, Object owner) {
    boolean retval;
    ExecutionContext ec = op.getExecutionContext();
    try {
        ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
        SQLController sqlControl = storeMgr.getSQLController();
        try {
            PreparedStatement ps = sqlControl.getStatementForUpdate(mconn, updateFkStmt, false);
            try {
                int jdbcPosition = 1;
                if (owner == null) {
                    if (ownerMemberMetaData != null) {
                        ownerMapping.setObject(ec, ps, MappingHelper.getMappingIndices(1, ownerMapping), null, op, ownerMemberMetaData.getAbsoluteFieldNumber());
                    } else {
                        ownerMapping.setObject(ec, ps, MappingHelper.getMappingIndices(1, ownerMapping), null);
                    }
                    jdbcPosition += ownerMapping.getNumberOfDatastoreMappings();
                } else {
                    jdbcPosition = BackingStoreHelper.populateOwnerInStatement(op, ec, ps, jdbcPosition, this);
                }
                jdbcPosition = BackingStoreHelper.populateKeyInStatement(ec, ps, key, jdbcPosition, keyMapping);
                sqlControl.executeStatementUpdate(ec, mconn, updateFkStmt, ps, true);
                retval = true;
            } finally {
                sqlControl.closeStatement(mconn, ps);
            }
        } finally {
            mconn.release();
        }
    } catch (SQLException e) {
        throw new NucleusDataStoreException(Localiser.msg("056027", updateFkStmt), e);
    }
    return retval;
}