pg_type.c File Reference

#include "postgres.h"
#include "access/htup_details.h"
#include "access/table.h"
#include "access/xact.h"
#include "catalog/binary_upgrade.h"
#include "catalog/catalog.h"
#include "catalog/dependency.h"
#include "catalog/indexing.h"
#include "catalog/objectaccess.h"
#include "catalog/pg_collation.h"
#include "catalog/pg_namespace.h"
#include "catalog/pg_proc.h"
#include "catalog/pg_type.h"
#include "commands/typecmds.h"
#include "miscadmin.h"
#include "parser/scansup.h"
#include "utils/acl.h"
#include "utils/builtins.h"
#include "utils/fmgroids.h"
#include "utils/lsyscache.h"
#include "utils/rel.h"
#include "utils/syscache.h"

Include dependency graph for pg_type.c:

Go to the source code of this file.

Functions
ObjectAddress	TypeShellMake (const char *typeName, Oid typeNamespace, Oid ownerId)
ObjectAddress	TypeCreate (Oid newTypeOid, const char *typeName, Oid typeNamespace, Oid relationOid, char relationKind, Oid ownerId, int16 internalSize, char typeType, char typeCategory, bool typePreferred, char typDelim, Oid inputProcedure, Oid outputProcedure, Oid receiveProcedure, Oid sendProcedure, Oid typmodinProcedure, Oid typmodoutProcedure, Oid analyzeProcedure, Oid elementType, bool isImplicitArray, Oid arrayType, Oid baseType, const char *defaultTypeValue, char *defaultTypeBin, bool passedByValue, char alignment, char storage, int32 typeMod, int32 typNDims, bool typeNotNull, Oid typeCollation)
void	GenerateTypeDependencies (HeapTuple typeTuple, Relation typeCatalog, Node *defaultExpr, void *typacl, char relationKind, bool isImplicitArray, bool isDependentType, bool rebuild)
void	RenameTypeInternal (Oid typeOid, const char *newTypeName, Oid typeNamespace)
char *	makeArrayTypeName (const char *typeName, Oid typeNamespace)
bool	moveArrayTypeName (Oid typeOid, const char *typeName, Oid typeNamespace)

Variables
Oid	binary_upgrade_next_pg_type_oid = InvalidOid

Function Documentation

GenerateTypeDependencies()

void GenerateTypeDependencies	(	HeapTuple	typeTuple,
		Relation	typeCatalog,
		Node *	defaultExpr,
		void *	typacl,
		char	relationKind,
		bool	isImplicitArray,
		bool	isDependentType,
		bool	rebuild
	)

Definition at line 542 of file pg_type.c.

References add_exact_object_address(), DatumGetAclPCopy, deleteDependencyRecordsFor(), deleteSharedDependencyRecordsFor(), DEPENDENCY_INTERNAL, DEPENDENCY_NORMAL, free_object_addresses(), GETSTRUCT, heap_getattr, new_object_addresses(), NIL, ObjectAddressSet, OidIsValid, record_object_address_dependencies(), recordDependencyOn(), recordDependencyOnCurrentExtension(), recordDependencyOnExpr(), recordDependencyOnNewAcl(), recordDependencyOnOwner(), RelationGetDescr, stringToNode(), and TextDatumGetCString.

Referenced by AlterDomainDefault(), AlterTypeRecurse(), TypeCreate(), and TypeShellMake().

{
    Form_pg_type typeForm = (Form_pg_type) GETSTRUCT(typeTuple);
    Oid         typeObjectId = typeForm->oid;
    Datum       datum;
    bool        isNull;
    ObjectAddress myself,
                referenced;
    ObjectAddresses *addrs_normal;

    /* Extract defaultExpr if caller didn't pass it */
    if (defaultExpr == NULL)
    {
        datum = heap_getattr(typeTuple, Anum_pg_type_typdefaultbin,
                             RelationGetDescr(typeCatalog), &isNull);
        if (!isNull)
            defaultExpr = stringToNode(TextDatumGetCString(datum));
    }
    /* Extract typacl if caller didn't pass it */
    if (typacl == NULL)
    {
        datum = heap_getattr(typeTuple, Anum_pg_type_typacl,
                             RelationGetDescr(typeCatalog), &isNull);
        if (!isNull)
            typacl = DatumGetAclPCopy(datum);
    }

    /* If rebuild, first flush old dependencies, except extension deps */
    if (rebuild)
    {
        deleteDependencyRecordsFor(TypeRelationId, typeObjectId, true);
        deleteSharedDependencyRecordsFor(TypeRelationId, typeObjectId, 0);
    }

    ObjectAddressSet(myself, TypeRelationId, typeObjectId);

    /*
     * Make dependencies on namespace, owner, ACL, extension.
     *
     * Skip these for a dependent type, since it will have such dependencies
     * indirectly through its depended-on type or relation.
     */

    /* placeholder for all normal dependencies */
    addrs_normal = new_object_addresses();

    if (!isDependentType)
    {
        ObjectAddressSet(referenced, NamespaceRelationId,
                         typeForm->typnamespace);
        recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);

        recordDependencyOnOwner(TypeRelationId, typeObjectId,
                                typeForm->typowner);

        recordDependencyOnNewAcl(TypeRelationId, typeObjectId, 0,
                                 typeForm->typowner, typacl);

        recordDependencyOnCurrentExtension(&myself, rebuild);
    }

    /* Normal dependencies on the I/O functions */
    if (OidIsValid(typeForm->typinput))
    {
        ObjectAddressSet(referenced, ProcedureRelationId, typeForm->typinput);
        add_exact_object_address(&referenced, addrs_normal);
    }

    if (OidIsValid(typeForm->typoutput))
    {
        ObjectAddressSet(referenced, ProcedureRelationId, typeForm->typoutput);
        add_exact_object_address(&referenced, addrs_normal);
    }

    if (OidIsValid(typeForm->typreceive))
    {
        ObjectAddressSet(referenced, ProcedureRelationId, typeForm->typreceive);
        add_exact_object_address(&referenced, addrs_normal);
    }

    if (OidIsValid(typeForm->typsend))
    {
        ObjectAddressSet(referenced, ProcedureRelationId, typeForm->typsend);
        add_exact_object_address(&referenced, addrs_normal);
    }

    if (OidIsValid(typeForm->typmodin))
    {
        ObjectAddressSet(referenced, ProcedureRelationId, typeForm->typmodin);
        add_exact_object_address(&referenced, addrs_normal);
    }

    if (OidIsValid(typeForm->typmodout))
    {
        ObjectAddressSet(referenced, ProcedureRelationId, typeForm->typmodout);
        add_exact_object_address(&referenced, addrs_normal);
    }

    if (OidIsValid(typeForm->typanalyze))
    {
        ObjectAddressSet(referenced, ProcedureRelationId, typeForm->typanalyze);
        add_exact_object_address(&referenced, addrs_normal);
    }

    /* Normal dependency from a domain to its base type. */
    if (OidIsValid(typeForm->typbasetype))
    {
        ObjectAddressSet(referenced, TypeRelationId, typeForm->typbasetype);
        add_exact_object_address(&referenced, addrs_normal);
    }

    /*
     * Normal dependency from a domain to its collation.  We know the default
     * collation is pinned, so don't bother recording it.
     */
    if (OidIsValid(typeForm->typcollation) &&
        typeForm->typcollation != DEFAULT_COLLATION_OID)
    {
        ObjectAddressSet(referenced, CollationRelationId, typeForm->typcollation);
        add_exact_object_address(&referenced, addrs_normal);
    }

    record_object_address_dependencies(&myself, addrs_normal, DEPENDENCY_NORMAL);
    free_object_addresses(addrs_normal);

    /* Normal dependency on the default expression. */
    if (defaultExpr)
        recordDependencyOnExpr(&myself, defaultExpr, NIL, DEPENDENCY_NORMAL);

    /*
     * If the type is a rowtype for a relation, mark it as internally
     * dependent on the relation, *unless* it is a stand-alone composite type
     * relation. For the latter case, we have to reverse the dependency.
     *
     * In the former case, this allows the type to be auto-dropped when the
     * relation is, and not otherwise. And in the latter, of course we get the
     * opposite effect.
     */
    if (OidIsValid(typeForm->typrelid))
    {
        ObjectAddressSet(referenced, RelationRelationId, typeForm->typrelid);

        if (relationKind != RELKIND_COMPOSITE_TYPE)
            recordDependencyOn(&myself, &referenced, DEPENDENCY_INTERNAL);
        else
            recordDependencyOn(&referenced, &myself, DEPENDENCY_INTERNAL);
    }

    /*
     * If the type is an implicitly-created array type, mark it as internally
     * dependent on the element type.  Otherwise, if it has an element type,
     * the dependency is a normal one.
     */
    if (OidIsValid(typeForm->typelem))
    {
        ObjectAddressSet(referenced, TypeRelationId, typeForm->typelem);
        recordDependencyOn(&myself, &referenced,
                           isImplicitArray ? DEPENDENCY_INTERNAL : DEPENDENCY_NORMAL);
    }
}

makeArrayTypeName()

char* makeArrayTypeName	(	const char *	typeName,
		Oid	typeNamespace
	)

Definition at line 795 of file pg_type.c.

References CStringGetDatum, ereport, errcode(), ERRCODE_DUPLICATE_OBJECT, errmsg(), ERROR, i, NAMEDATALEN, ObjectIdGetDatum, palloc(), SearchSysCacheExists2, truncate_identifier(), and TYPENAMENSP.

Referenced by DefineDomain(), DefineEnum(), DefineRange(), DefineType(), heap_create_with_catalog(), moveArrayTypeName(), and RenameTypeInternal().

{
    char       *arr = (char *) palloc(NAMEDATALEN);
    int         namelen = strlen(typeName);
    int         i;

    /*
     * The idea is to prepend underscores as needed until we make a name that
     * doesn't collide with anything...
     */
    for (i = 1; i < NAMEDATALEN - 1; i++)
    {
        arr[i - 1] = '_';
        if (i + namelen < NAMEDATALEN)
            strcpy(arr + i, typeName);
        else
        {
            memcpy(arr + i, typeName, NAMEDATALEN - i);
            truncate_identifier(arr, NAMEDATALEN, false);
        }
        if (!SearchSysCacheExists2(TYPENAMENSP,
                                   CStringGetDatum(arr),
                                   ObjectIdGetDatum(typeNamespace)))
            break;
    }

    if (i >= NAMEDATALEN - 1)
        ereport(ERROR,
                (errcode(ERRCODE_DUPLICATE_OBJECT),
                 errmsg("could not form array type name for type \"%s\"",
                        typeName)));

    return arr;
}

moveArrayTypeName()

bool moveArrayTypeName	(	Oid	typeOid,
		const char *	typeName,
		Oid	typeNamespace
	)

Definition at line 856 of file pg_type.c.

References CommandCounterIncrement(), get_array_type(), get_element_type(), get_typisdefined(), makeArrayTypeName(), OidIsValid, pfree(), and RenameTypeInternal().

Referenced by DefineCompositeType(), DefineDomain(), DefineEnum(), DefineRange(), DefineType(), heap_create_with_catalog(), and RenameTypeInternal().

{
    Oid         elemOid;
    char       *newname;

    /* We need do nothing if it's a shell type. */
    if (!get_typisdefined(typeOid))
        return true;

    /* Can't change it if it's not an autogenerated array type. */
    elemOid = get_element_type(typeOid);
    if (!OidIsValid(elemOid) ||
        get_array_type(elemOid) != typeOid)
        return false;

    /*
     * OK, use makeArrayTypeName to pick an unused modification of the name.
     * Note that since makeArrayTypeName is an iterative process, this will
     * produce a name that it might have produced the first time, had the
     * conflicting type we are about to create already existed.
     */
    newname = makeArrayTypeName(typeName, typeNamespace);

    /* Apply the rename */
    RenameTypeInternal(typeOid, newname, typeNamespace);

    /*
     * We must bump the command counter so that any subsequent use of
     * makeArrayTypeName sees what we just did and doesn't pick the same name.
     */
    CommandCounterIncrement();

    pfree(newname);

    return true;
}

RenameTypeInternal()

void RenameTypeInternal	(	Oid	typeOid,
		const char *	newTypeName,
		Oid	typeNamespace
	)

Definition at line 720 of file pg_type.c.

References Assert, CatalogTupleUpdate(), CStringGetDatum, elog, ereport, errcode(), ERRCODE_DUPLICATE_OBJECT, errmsg(), ERROR, get_typisdefined(), GETSTRUCT, GetSysCacheOid2, heap_freetuple(), HeapTupleIsValid, InvokeObjectPostAlterHook, makeArrayTypeName(), moveArrayTypeName(), namestrcpy(), ObjectIdGetDatum, OidIsValid, pfree(), RenameTypeInternal(), RowExclusiveLock, SearchSysCacheCopy1, HeapTupleData::t_self, table_close(), table_open(), TYPENAMENSP, and TYPEOID.

Referenced by moveArrayTypeName(), RenameRelationInternal(), RenameType(), and RenameTypeInternal().

{
    Relation    pg_type_desc;
    HeapTuple   tuple;
    Form_pg_type typ;
    Oid         arrayOid;
    Oid         oldTypeOid;

    pg_type_desc = table_open(TypeRelationId, RowExclusiveLock);

    tuple = SearchSysCacheCopy1(TYPEOID, ObjectIdGetDatum(typeOid));
    if (!HeapTupleIsValid(tuple))
        elog(ERROR, "cache lookup failed for type %u", typeOid);
    typ = (Form_pg_type) GETSTRUCT(tuple);

    /* We are not supposed to be changing schemas here */
    Assert(typeNamespace == typ->typnamespace);

    arrayOid = typ->typarray;

    /* Check for a conflicting type name. */
    oldTypeOid = GetSysCacheOid2(TYPENAMENSP, Anum_pg_type_oid,
                                 CStringGetDatum(newTypeName),
                                 ObjectIdGetDatum(typeNamespace));

    /*
     * If there is one, see if it's an autogenerated array type, and if so
     * rename it out of the way.  (But we must skip that for a shell type
     * because moveArrayTypeName will do the wrong thing in that case.)
     * Otherwise, we can at least give a more friendly error than unique-index
     * violation.
     */
    if (OidIsValid(oldTypeOid))
    {
        if (get_typisdefined(oldTypeOid) &&
            moveArrayTypeName(oldTypeOid, newTypeName, typeNamespace))
             /* successfully dodged the problem */ ;
        else
            ereport(ERROR,
                    (errcode(ERRCODE_DUPLICATE_OBJECT),
                     errmsg("type \"%s\" already exists", newTypeName)));
    }

    /* OK, do the rename --- tuple is a copy, so OK to scribble on it */
    namestrcpy(&(typ->typname), newTypeName);

    CatalogTupleUpdate(pg_type_desc, &tuple->t_self, tuple);

    InvokeObjectPostAlterHook(TypeRelationId, typeOid, 0);

    heap_freetuple(tuple);
    table_close(pg_type_desc, RowExclusiveLock);

    /*
     * If the type has an array type, recurse to handle that.  But we don't
     * need to do anything more if we already renamed that array type above
     * (which would happen when, eg, renaming "foo" to "_foo").
     */
    if (OidIsValid(arrayOid) && arrayOid != oldTypeOid)
    {
        char       *arrname = makeArrayTypeName(newTypeName, typeNamespace);

        RenameTypeInternal(arrayOid, arrname, typeNamespace);
        pfree(arrname);
    }
}

TypeCreate()

ObjectAddress TypeCreate	(	Oid	newTypeOid,
		const char *	typeName,
		Oid	typeNamespace,
		Oid	relationOid,
		char	relationKind,
		Oid	ownerId,
		int16	internalSize,
		char	typeType,
		char	typeCategory,
		bool	typePreferred,
		char	typDelim,
		Oid	inputProcedure,
		Oid	outputProcedure,
		Oid	receiveProcedure,
		Oid	sendProcedure,
		Oid	typmodinProcedure,
		Oid	typmodoutProcedure,
		Oid	analyzeProcedure,
		Oid	elementType,
		bool	isImplicitArray,
		Oid	arrayType,
		Oid	baseType,
		const char *	defaultTypeValue,
		char *	defaultTypeBin,
		bool	passedByValue,
		char	alignment,
		char	storage,
		int32	typeMod,
		int32	typNDims,
		bool	typeNotNull,
		Oid	typeCollation
	)

Definition at line 192 of file pg_type.c.

References aclcheck_error(), ACLCHECK_NOT_OWNER, binary_upgrade_next_pg_type_oid, BoolGetDatum, CatalogTupleInsert(), CatalogTupleUpdate(), CharGetDatum, CStringGetDatum, CStringGetTextDatum, elog, ereport, errcode(), ERRCODE_DUPLICATE_OBJECT, errmsg(), ERROR, GenerateTypeDependencies(), get_user_default_acl(), GetNewOidWithIndex(), GETSTRUCT, heap_form_tuple(), heap_modify_tuple(), HeapTupleIsValid, i, Int16GetDatum, Int32GetDatum, InvalidOid, InvokeObjectPostCreateHook, IsBinaryUpgrade, IsBootstrapProcessingMode, name, NameGetDatum, namestrcpy(), OBJECT_TYPE, ObjectAddressSet, ObjectIdGetDatum, OidIsValid, PointerGetDatum, RelationGetDescr, RowExclusiveLock, SearchSysCacheCopy2, stringToNode(), HeapTupleData::t_self, table_close(), table_open(), TYPENAMENSP, TypeOidIndexId, and values.

Referenced by AddNewRelationType(), DefineDomain(), DefineEnum(), DefineRange(), DefineType(), and heap_create_with_catalog().

{
    Relation    pg_type_desc;
    Oid         typeObjectId;
    bool        isDependentType;
    bool        rebuildDeps = false;
    Acl        *typacl;
    HeapTuple   tup;
    bool        nulls[Natts_pg_type];
    bool        replaces[Natts_pg_type];
    Datum       values[Natts_pg_type];
    NameData    name;
    int         i;
    ObjectAddress address;

    /*
     * We assume that the caller validated the arguments individually, but did
     * not check for bad combinations.
     *
     * Validate size specifications: either positive (fixed-length) or -1
     * (varlena) or -2 (cstring).
     */
    if (!(internalSize > 0 ||
          internalSize == -1 ||
          internalSize == -2))
        ereport(ERROR,
                (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                 errmsg("invalid type internal size %d",
                        internalSize)));

    if (passedByValue)
    {
        /*
         * Pass-by-value types must have a fixed length that is one of the
         * values supported by fetch_att() and store_att_byval(); and the
         * alignment had better agree, too.  All this code must match
         * access/tupmacs.h!
         */
        if (internalSize == (int16) sizeof(char))
        {
            if (alignment != TYPALIGN_CHAR)
                ereport(ERROR,
                        (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                         errmsg("alignment \"%c\" is invalid for passed-by-value type of size %d",
                                alignment, internalSize)));
        }
        else if (internalSize == (int16) sizeof(int16))
        {
            if (alignment != TYPALIGN_SHORT)
                ereport(ERROR,
                        (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                         errmsg("alignment \"%c\" is invalid for passed-by-value type of size %d",
                                alignment, internalSize)));
        }
        else if (internalSize == (int16) sizeof(int32))
        {
            if (alignment != TYPALIGN_INT)
                ereport(ERROR,
                        (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                         errmsg("alignment \"%c\" is invalid for passed-by-value type of size %d",
                                alignment, internalSize)));
        }
#if SIZEOF_DATUM == 8
        else if (internalSize == (int16) sizeof(Datum))
        {
            if (alignment != TYPALIGN_DOUBLE)
                ereport(ERROR,
                        (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                         errmsg("alignment \"%c\" is invalid for passed-by-value type of size %d",
                                alignment, internalSize)));
        }
#endif
        else
            ereport(ERROR,
                    (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                     errmsg("internal size %d is invalid for passed-by-value type",
                            internalSize)));
    }
    else
    {
        /* varlena types must have int align or better */
        if (internalSize == -1 &&
            !(alignment == TYPALIGN_INT || alignment == TYPALIGN_DOUBLE))
            ereport(ERROR,
                    (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                     errmsg("alignment \"%c\" is invalid for variable-length type",
                            alignment)));
        /* cstring must have char alignment */
        if (internalSize == -2 && !(alignment == TYPALIGN_CHAR))
            ereport(ERROR,
                    (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                     errmsg("alignment \"%c\" is invalid for variable-length type",
                            alignment)));
    }

    /* Only varlena types can be toasted */
    if (storage != TYPSTORAGE_PLAIN && internalSize != -1)
        ereport(ERROR,
                (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
                 errmsg("fixed-size types must have storage PLAIN")));

    /*
     * This is a dependent type if it's an implicitly-created array type, or
     * if it's a relation rowtype that's not a composite type.  For such types
     * we'll leave the ACL empty, and we'll skip creating some dependency
     * records because there will be a dependency already through the
     * depended-on type or relation.  (Caution: this is closely intertwined
     * with some behavior in GenerateTypeDependencies.)
     */
    isDependentType = isImplicitArray ||
        (OidIsValid(relationOid) && relationKind != RELKIND_COMPOSITE_TYPE);

    /*
     * initialize arrays needed for heap_form_tuple or heap_modify_tuple
     */
    for (i = 0; i < Natts_pg_type; ++i)
    {
        nulls[i] = false;
        replaces[i] = true;
        values[i] = (Datum) 0;
    }

    /*
     * insert data values
     */
    namestrcpy(&name, typeName);
    values[Anum_pg_type_typname - 1] = NameGetDatum(&name);
    values[Anum_pg_type_typnamespace - 1] = ObjectIdGetDatum(typeNamespace);
    values[Anum_pg_type_typowner - 1] = ObjectIdGetDatum(ownerId);
    values[Anum_pg_type_typlen - 1] = Int16GetDatum(internalSize);
    values[Anum_pg_type_typbyval - 1] = BoolGetDatum(passedByValue);
    values[Anum_pg_type_typtype - 1] = CharGetDatum(typeType);
    values[Anum_pg_type_typcategory - 1] = CharGetDatum(typeCategory);
    values[Anum_pg_type_typispreferred - 1] = BoolGetDatum(typePreferred);
    values[Anum_pg_type_typisdefined - 1] = BoolGetDatum(true);
    values[Anum_pg_type_typdelim - 1] = CharGetDatum(typDelim);
    values[Anum_pg_type_typrelid - 1] = ObjectIdGetDatum(relationOid);
    values[Anum_pg_type_typelem - 1] = ObjectIdGetDatum(elementType);
    values[Anum_pg_type_typarray - 1] = ObjectIdGetDatum(arrayType);
    values[Anum_pg_type_typinput - 1] = ObjectIdGetDatum(inputProcedure);
    values[Anum_pg_type_typoutput - 1] = ObjectIdGetDatum(outputProcedure);
    values[Anum_pg_type_typreceive - 1] = ObjectIdGetDatum(receiveProcedure);
    values[Anum_pg_type_typsend - 1] = ObjectIdGetDatum(sendProcedure);
    values[Anum_pg_type_typmodin - 1] = ObjectIdGetDatum(typmodinProcedure);
    values[Anum_pg_type_typmodout - 1] = ObjectIdGetDatum(typmodoutProcedure);
    values[Anum_pg_type_typanalyze - 1] = ObjectIdGetDatum(analyzeProcedure);
    values[Anum_pg_type_typalign - 1] = CharGetDatum(alignment);
    values[Anum_pg_type_typstorage - 1] = CharGetDatum(storage);
    values[Anum_pg_type_typnotnull - 1] = BoolGetDatum(typeNotNull);
    values[Anum_pg_type_typbasetype - 1] = ObjectIdGetDatum(baseType);
    values[Anum_pg_type_typtypmod - 1] = Int32GetDatum(typeMod);
    values[Anum_pg_type_typndims - 1] = Int32GetDatum(typNDims);
    values[Anum_pg_type_typcollation - 1] = ObjectIdGetDatum(typeCollation);

    /*
     * initialize the default binary value for this type.  Check for nulls of
     * course.
     */
    if (defaultTypeBin)
        values[Anum_pg_type_typdefaultbin - 1] = CStringGetTextDatum(defaultTypeBin);
    else
        nulls[Anum_pg_type_typdefaultbin - 1] = true;

    /*
     * initialize the default value for this type.
     */
    if (defaultTypeValue)
        values[Anum_pg_type_typdefault - 1] = CStringGetTextDatum(defaultTypeValue);
    else
        nulls[Anum_pg_type_typdefault - 1] = true;

    /*
     * Initialize the type's ACL, too.  But dependent types don't get one.
     */
    if (isDependentType)
        typacl = NULL;
    else
        typacl = get_user_default_acl(OBJECT_TYPE, ownerId,
                                      typeNamespace);
    if (typacl != NULL)
        values[Anum_pg_type_typacl - 1] = PointerGetDatum(typacl);
    else
        nulls[Anum_pg_type_typacl - 1] = true;

    /*
     * open pg_type and prepare to insert or update a row.
     *
     * NOTE: updating will not work correctly in bootstrap mode; but we don't
     * expect to be overwriting any shell types in bootstrap mode.
     */
    pg_type_desc = table_open(TypeRelationId, RowExclusiveLock);

    tup = SearchSysCacheCopy2(TYPENAMENSP,
                              CStringGetDatum(typeName),
                              ObjectIdGetDatum(typeNamespace));
    if (HeapTupleIsValid(tup))
    {
        Form_pg_type typform = (Form_pg_type) GETSTRUCT(tup);

        /*
         * check that the type is not already defined.  It may exist as a
         * shell type, however.
         */
        if (typform->typisdefined)
            ereport(ERROR,
                    (errcode(ERRCODE_DUPLICATE_OBJECT),
                     errmsg("type \"%s\" already exists", typeName)));

        /*
         * shell type must have been created by same owner
         */
        if (typform->typowner != ownerId)
            aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_TYPE, typeName);

        /* trouble if caller wanted to force the OID */
        if (OidIsValid(newTypeOid))
            elog(ERROR, "cannot assign new OID to existing shell type");

        replaces[Anum_pg_type_oid - 1] = false;

        /*
         * Okay to update existing shell type tuple
         */
        tup = heap_modify_tuple(tup,
                                RelationGetDescr(pg_type_desc),
                                values,
                                nulls,
                                replaces);

        CatalogTupleUpdate(pg_type_desc, &tup->t_self, tup);

        typeObjectId = typform->oid;

        rebuildDeps = true;     /* get rid of shell type's dependencies */
    }
    else
    {
        /* Force the OID if requested by caller */
        if (OidIsValid(newTypeOid))
            typeObjectId = newTypeOid;
        /* Use binary-upgrade override for pg_type.oid, if supplied. */
        else if (IsBinaryUpgrade)
        {
            if (!OidIsValid(binary_upgrade_next_pg_type_oid))
                ereport(ERROR,
                        (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                         errmsg("pg_type OID value not set when in binary upgrade mode")));

            typeObjectId = binary_upgrade_next_pg_type_oid;
            binary_upgrade_next_pg_type_oid = InvalidOid;
        }
        else
        {
            typeObjectId = GetNewOidWithIndex(pg_type_desc, TypeOidIndexId,
                                              Anum_pg_type_oid);
        }

        values[Anum_pg_type_oid - 1] = ObjectIdGetDatum(typeObjectId);

        tup = heap_form_tuple(RelationGetDescr(pg_type_desc),
                              values, nulls);

        CatalogTupleInsert(pg_type_desc, tup);
    }

    /*
     * Create dependencies.  We can/must skip this in bootstrap mode.
     */
    if (!IsBootstrapProcessingMode())
        GenerateTypeDependencies(tup,
                                 pg_type_desc,
                                 (defaultTypeBin ?
                                  stringToNode(defaultTypeBin) :
                                  NULL),
                                 typacl,
                                 relationKind,
                                 isImplicitArray,
                                 isDependentType,
                                 rebuildDeps);

    /* Post creation hook for new type */
    InvokeObjectPostCreateHook(TypeRelationId, typeObjectId, 0);

    ObjectAddressSet(address, TypeRelationId, typeObjectId);

    /*
     * finish up
     */
    table_close(pg_type_desc, RowExclusiveLock);

    return address;
}

TypeShellMake()

ObjectAddress TypeShellMake	(	const char *	typeName,
		Oid	typeNamespace,
		Oid	ownerId
	)

Definition at line 56 of file pg_type.c.

References Assert, binary_upgrade_next_pg_type_oid, BoolGetDatum, CatalogTupleInsert(), CharGetDatum, DEFAULT_TYPDELIM, ereport, errcode(), errmsg(), ERROR, GenerateTypeDependencies(), GetNewOidWithIndex(), heap_form_tuple(), heap_freetuple(), i, Int16GetDatum, Int32GetDatum, InvalidOid, InvokeObjectPostCreateHook, IsBinaryUpgrade, IsBootstrapProcessingMode, name, NameGetDatum, namestrcpy(), ObjectAddressSet, ObjectIdGetDatum, OidIsValid, PointerIsValid, RelationData::rd_att, RowExclusiveLock, table_close(), table_open(), TypeOidIndexId, and values.

Referenced by compute_return_type(), and DefineType().

{
    Relation    pg_type_desc;
    TupleDesc   tupDesc;
    int         i;
    HeapTuple   tup;
    Datum       values[Natts_pg_type];
    bool        nulls[Natts_pg_type];
    Oid         typoid;
    NameData    name;
    ObjectAddress address;

    Assert(PointerIsValid(typeName));

    /*
     * open pg_type
     */
    pg_type_desc = table_open(TypeRelationId, RowExclusiveLock);
    tupDesc = pg_type_desc->rd_att;

    /*
     * initialize our *nulls and *values arrays
     */
    for (i = 0; i < Natts_pg_type; ++i)
    {
        nulls[i] = false;
        values[i] = (Datum) NULL;   /* redundant, but safe */
    }

    /*
     * initialize *values with the type name and dummy values
     *
     * The representational details are the same as int4 ... it doesn't really
     * matter what they are so long as they are consistent.  Also note that we
     * give it typtype = TYPTYPE_PSEUDO as extra insurance that it won't be
     * mistaken for a usable type.
     */
    namestrcpy(&name, typeName);
    values[Anum_pg_type_typname - 1] = NameGetDatum(&name);
    values[Anum_pg_type_typnamespace - 1] = ObjectIdGetDatum(typeNamespace);
    values[Anum_pg_type_typowner - 1] = ObjectIdGetDatum(ownerId);
    values[Anum_pg_type_typlen - 1] = Int16GetDatum(sizeof(int32));
    values[Anum_pg_type_typbyval - 1] = BoolGetDatum(true);
    values[Anum_pg_type_typtype - 1] = CharGetDatum(TYPTYPE_PSEUDO);
    values[Anum_pg_type_typcategory - 1] = CharGetDatum(TYPCATEGORY_PSEUDOTYPE);
    values[Anum_pg_type_typispreferred - 1] = BoolGetDatum(false);
    values[Anum_pg_type_typisdefined - 1] = BoolGetDatum(false);
    values[Anum_pg_type_typdelim - 1] = CharGetDatum(DEFAULT_TYPDELIM);
    values[Anum_pg_type_typrelid - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typelem - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typarray - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typinput - 1] = ObjectIdGetDatum(F_SHELL_IN);
    values[Anum_pg_type_typoutput - 1] = ObjectIdGetDatum(F_SHELL_OUT);
    values[Anum_pg_type_typreceive - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typsend - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typmodin - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typmodout - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typanalyze - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typalign - 1] = CharGetDatum(TYPALIGN_INT);
    values[Anum_pg_type_typstorage - 1] = CharGetDatum(TYPSTORAGE_PLAIN);
    values[Anum_pg_type_typnotnull - 1] = BoolGetDatum(false);
    values[Anum_pg_type_typbasetype - 1] = ObjectIdGetDatum(InvalidOid);
    values[Anum_pg_type_typtypmod - 1] = Int32GetDatum(-1);
    values[Anum_pg_type_typndims - 1] = Int32GetDatum(0);
    values[Anum_pg_type_typcollation - 1] = ObjectIdGetDatum(InvalidOid);
    nulls[Anum_pg_type_typdefaultbin - 1] = true;
    nulls[Anum_pg_type_typdefault - 1] = true;
    nulls[Anum_pg_type_typacl - 1] = true;

    /* Use binary-upgrade override for pg_type.oid? */
    if (IsBinaryUpgrade)
    {
        if (!OidIsValid(binary_upgrade_next_pg_type_oid))
            ereport(ERROR,
                    (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
                     errmsg("pg_type OID value not set when in binary upgrade mode")));

        typoid = binary_upgrade_next_pg_type_oid;
        binary_upgrade_next_pg_type_oid = InvalidOid;
    }
    else
    {
        typoid = GetNewOidWithIndex(pg_type_desc, TypeOidIndexId,
                                    Anum_pg_type_oid);
    }

    values[Anum_pg_type_oid - 1] = ObjectIdGetDatum(typoid);

    /*
     * create a new type tuple
     */
    tup = heap_form_tuple(tupDesc, values, nulls);

    /*
     * insert the tuple in the relation and get the tuple's oid.
     */
    CatalogTupleInsert(pg_type_desc, tup);

    /*
     * Create dependencies.  We can/must skip this in bootstrap mode.
     */
    if (!IsBootstrapProcessingMode())
        GenerateTypeDependencies(tup,
                                 pg_type_desc,
                                 NULL,
                                 NULL,
                                 0,
                                 false,
                                 false,
                                 false);

    /* Post creation hook for new shell type */
    InvokeObjectPostCreateHook(TypeRelationId, typoid, 0);

    ObjectAddressSet(address, TypeRelationId, typoid);

    /*
     * clean up and return the type-oid
     */
    heap_freetuple(tup);
    table_close(pg_type_desc, RowExclusiveLock);

    return address;
}

Variable Documentation

binary_upgrade_next_pg_type_oid

Oid binary_upgrade_next_pg_type_oid = InvalidOid

Definition at line 40 of file pg_type.c.

Referenced by binary_upgrade_set_next_pg_type_oid(), TypeCreate(), and TypeShellMake().