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-rw-r--r--c++/src/H5LaccProp.h11
-rw-r--r--c++/src/H5LcreatProp.h11
-rw-r--r--c++/src/H5Object.cpp69
-rw-r--r--c++/src/H5Object.h26
-rw-r--r--c++/test/tlinks.cpp156
5 files changed, 238 insertions, 35 deletions
diff --git a/c++/src/H5LaccProp.h b/c++/src/H5LaccProp.h
index 70890b3..ec5e54f 100644
--- a/c++/src/H5LaccProp.h
+++ b/c++/src/H5LaccProp.h
@@ -12,9 +12,6 @@
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-// Class LinkAccPropList represents the HDF5 file access property list and
-// inherits from DataType.
-
#ifndef __H5LinkAccPropList_H
#define __H5LinkAccPropList_H
@@ -22,15 +19,15 @@ namespace H5 {
/*! \class LinkAccPropList
\brief Class LinkAccPropList inherits from PropList and provides
- wrappers for the HDF5 file access property list.
+ wrappers for the HDF5 link access property list.
*/
// Inheritance: PropList -> IdComponent
class H5_DLLCPP LinkAccPropList : public PropList {
public:
- ///\brief Default file access property list.
+ ///\brief Default link access property list.
static const LinkAccPropList& DEFAULT;
- // Creates a file access property list.
+ // Creates a link access property list.
LinkAccPropList();
///\brief Returns this class name.
@@ -39,7 +36,7 @@ class H5_DLLCPP LinkAccPropList : public PropList {
// Copy constructor: same as the original LinkAccPropList.
LinkAccPropList(const LinkAccPropList& original);
- // Creates a copy of an existing file access property list
+ // Creates a copy of an existing link access property list
// using the property list id.
LinkAccPropList (const hid_t plist_id);
diff --git a/c++/src/H5LcreatProp.h b/c++/src/H5LcreatProp.h
index 12cb479..f6e10bf 100644
--- a/c++/src/H5LcreatProp.h
+++ b/c++/src/H5LcreatProp.h
@@ -12,9 +12,6 @@
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-// Class LinkCreatPropList represents the HDF5 file access property list and
-// inherits from DataType.
-
#ifndef __H5LinkCreatPropList_H
#define __H5LinkCreatPropList_H
@@ -22,15 +19,15 @@ namespace H5 {
/*! \class LinkCreatPropList
\brief Class LinkCreatPropList inherits from PropList and provides
- wrappers for the HDF5 file access property list.
+ wrappers for the HDF5 link creation property list.
*/
// Inheritance: PropList -> IdComponent
class H5_DLLCPP LinkCreatPropList : public PropList {
public:
- ///\brief Default file access property list.
+ ///\brief Default link creation property list.
static const LinkCreatPropList& DEFAULT;
- // Creates a file access property list.
+ // Creates a link creation property list.
LinkCreatPropList();
///\brief Returns this class name.
@@ -39,7 +36,7 @@ class H5_DLLCPP LinkCreatPropList : public PropList {
// Copy constructor: same as the original LinkCreatPropList.
LinkCreatPropList(const LinkCreatPropList& original);
- // Creates a copy of an existing file access property list
+ // Creates a copy of an existing link creation property list
// using the property list id.
LinkCreatPropList (const hid_t plist_id);
diff --git a/c++/src/H5Object.cpp b/c++/src/H5Object.cpp
index 1c22efe..03558e9 100644
--- a/c++/src/H5Object.cpp
+++ b/c++/src/H5Object.cpp
@@ -12,6 +12,8 @@
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <string>
+#include <iostream>
+using namespace std;
#include "H5private.h" // for HDmemset
#include "H5Include.h"
@@ -40,9 +42,8 @@
namespace H5 {
#ifndef DOXYGEN_SHOULD_SKIP_THIS
-// userAttrOpWrpr simply interfaces between the user's function and the
-// C library function H5Aiterate2; used to resolve the different prototype
-// problem. May be moved to Iterator later.
+// userAttrOpWrpr interfaces between the user's function and the
+// C library function H5Aiterate2
extern "C" herr_t userAttrOpWrpr(hid_t loc_id, const char *attr_name,
const H5A_info_t *ainfo, void *op_data)
{
@@ -52,6 +53,17 @@ extern "C" herr_t userAttrOpWrpr(hid_t loc_id, const char *attr_name,
return 0;
}
+// userVisitOpWrpr interfaces between the user's function and the
+// C library function H5Ovisit2
+extern "C" herr_t userVisitOpWrpr(hid_t obj_id, const char *attr_name,
+ const H5O_info_t *obj_info, void *op_data)
+{
+ H5std_string s_attr_name = H5std_string(attr_name);
+ UserData4Visit* myData = reinterpret_cast<UserData4Visit *> (op_data);
+ int status = myData->op(*myData->obj, s_attr_name, obj_info, myData->opData);
+ return status;
+}
+
//--------------------------------------------------------------------------
// Function: H5Object default constructor (protected)
// Programmer Binh-Minh Ribler - 2000
@@ -197,8 +209,6 @@ Attribute H5Object::openAttribute(const unsigned int idx) const
///\par Description
/// The signature of user_op is
/// void (*)(H5::H5Location&, H5std_string, void*).
-/// For information, please refer to the H5Aiterate2 API in
-/// the HDF5 C Reference Manual.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
int H5Object::iterateAttrs(attr_operator_t user_op, unsigned *_idx, void *op_data)
@@ -228,6 +238,55 @@ int H5Object::iterateAttrs(attr_operator_t user_op, unsigned *_idx, void *op_dat
}
//--------------------------------------------------------------------------
+// Function: H5Object::visit
+///\brief Recursively visits all HDF5 objects accessible from this object.
+///\param idx_type - IN: Type of index; valid values include:
+/// \li \c H5_INDEX_NAME
+/// \li \c H5_INDEX_CRT_ORDER
+///\param order - IN: Order in which index is traversed; valid values include:
+/// \li \c H5_ITER_DEC
+/// \li \c H5_ITER_INC
+/// \li \c H5_ITER_NATIVE
+///\param user_op - IN: Callback function passing data regarding the
+/// object to the calling application
+///\param *op_data - IN: User-defined pointer to data required by the
+/// application for its processing of the object
+///\param fields - IN: Flags specifying the fields to be retrieved
+/// to the callback op
+///\return
+/// \li On success:
+/// \li the return value of the first operator that returns a positive value
+/// \li zero if all members were processed with no operator returning non-zero
+/// \li On failure:
+/// \li an exception Exception will be thrown if something went
+/// wrong within the library or the operator failed
+///\exception H5::Exception
+///\par Description
+/// For information, please refer to the H5Ovisit2 API in the HDF5
+/// C Reference Manual.
+// Programmer Binh-Minh Ribler - Feb, 2019
+//--------------------------------------------------------------------------
+void H5Object::visit(H5_index_t idx_type, H5_iter_order_t order, visit_operator_t user_op, void *op_data, unsigned int fields)
+{
+ // Store the user's function and data
+ UserData4Visit* userData = new UserData4Visit;
+ userData->opData = op_data;
+ userData->op = user_op;
+ userData->obj = this;
+
+ // Call the C API passing in op wrapper and info
+ herr_t ret_value = H5Ovisit2(getId(), idx_type, order, userVisitOpWrpr, static_cast<void *>(userData), fields);
+
+ // Release memory
+ delete userData;
+
+ // Throw exception if H5Ovisit2 failed, which could be a failure in
+ // the library or in the call back operator
+ if (ret_value < 0)
+ throw Exception(inMemFunc("visit"), "H5Ovisit2 failed");
+}
+
+//--------------------------------------------------------------------------
// Function: H5Object::objVersion
///\brief Returns the header version of this HDF5 object.
///\return Object version, which can have the following values:
diff --git a/c++/src/H5Object.h b/c++/src/H5Object.h
index 10b3865..4a4e909 100644
--- a/c++/src/H5Object.h
+++ b/c++/src/H5Object.h
@@ -40,16 +40,30 @@ namespace H5 {
// Inheritance: H5Location -> IdComponent
// Define the operator function pointer for H5Aiterate().
-typedef void (*attr_operator_t)(H5Object& loc/*in*/,
- const H5std_string attr_name/*in*/,
- void *operator_data/*in,out*/);
+typedef void (*attr_operator_t)(H5Object& loc,
+ const H5std_string attr_name,
+ void *operator_data);
+
+// Define the operator function pointer for H5Ovisit2().
+typedef int (*visit_operator_t)(H5Object& obj,
+ const H5std_string attr_name,
+ const H5O_info_t *oinfo,
+ void *operator_data);
// User data for attribute iteration
class UserData4Aiterate {
public:
attr_operator_t op;
void* opData;
- H5Object* location;
+ H5Object* location; // Consider changing to H5Location
+};
+
+// User data for visit iteration
+class UserData4Visit {
+ public:
+ visit_operator_t op;
+ void* opData;
+ H5Object* obj;
};
class H5_DLLCPP H5Object : public H5Location {
@@ -71,6 +85,9 @@ class H5_DLLCPP H5Object : public H5Location {
// Iterate user's function over the attributes of this object.
int iterateAttrs(attr_operator_t user_op, unsigned* idx = NULL, void* op_data = NULL);
+ // Recursively visit elements reachable from this object.
+ void visit(H5_index_t idx_type, H5_iter_order_t order, visit_operator_t user_op, void *op_data, unsigned int fields);
+
// Returns the object header version of an object
unsigned objVersion() const;
@@ -98,6 +115,7 @@ class H5_DLLCPP H5Object : public H5Location {
ssize_t getObjName(H5std_string& obj_name, size_t len = 0) const;
H5std_string getObjName() const;
+
#ifndef DOXYGEN_SHOULD_SKIP_THIS
protected:
diff --git a/c++/test/tlinks.cpp b/c++/test/tlinks.cpp
index 6e990c9..c8bf8e6 100644
--- a/c++/test/tlinks.cpp
+++ b/c++/test/tlinks.cpp
@@ -33,17 +33,6 @@ using namespace H5;
// A lot of the definition inherited from C test links.c is left here until
// the H5L API is implemented and tests are completed - BMR 10/19/2009
-/*
- * This file needs to access private information from the H5G package.
- * This file also needs to access the group testing code.
- */
-//#define H5G_FRIEND
-//#define H5G_TESTING
-
-//#include "h5test.h"
-//#include "H5Gpkg.h" /* Groups */
-//#include "H5Iprivate.h" /* IDs */
-//#include "H5Lprivate.h" /* Links */
/* File for external link test. Created with gen_udlinks.c */
#define LINKED_FILE "be_extlink2.h5"
@@ -95,6 +84,7 @@ const char *FILENAME[] = {
"extlinks19A", /* 42: */
"extlinks19B", /* 43: */
"extlinks20", /* 44: */
+ "visit", /* 45: */
NULL
};
@@ -230,12 +220,15 @@ typedef struct {
const link_visit_t *info; /* Pointer to the link visit structure to use */
} lvisit_ud_t;
+#endif
/* Object visit structs */
typedef struct {
const char *path; /* Path to object */
H5O_type_t type; /* Type of object */
} obj_visit_t;
+
+#if 0
static const obj_visit_t ovisit0_old[] = {
{".", H5O_TYPE_GROUP},
{"Dataset_zero", H5O_TYPE_DATASET},
@@ -302,17 +295,18 @@ static const obj_visit_t ovisit2_new[] = {
{"hard_zero/Group1/Type_one", H5O_TYPE_NAMED_DATATYPE},
{"hard_zero/Type_zero", H5O_TYPE_NAMED_DATATYPE}
};
+#endif
typedef struct {
unsigned idx; /* Index in object visit structure */
const obj_visit_t *info; /* Pointer to the object visit structure to use */
} ovisit_ud_t;
-#endif
static const char *FILENAME[] = {
"link0",
"link1.h5",
"link2.h5",
+ "visit",
NULL
};
@@ -842,6 +836,138 @@ static void test_num_links(hid_t fapl_id, hbool_t new_format)
} // test_num_links
+static const obj_visit_t file_visit[] = {
+ {".", H5O_TYPE_GROUP},
+ {"Data", H5O_TYPE_GROUP},
+ {"Data/Compressed_Data", H5O_TYPE_DATASET},
+ {"Data/Float_Data", H5O_TYPE_DATASET},
+};
+
+static const obj_visit_t group_visit[] = {
+ {".", H5O_TYPE_GROUP},
+ {"Compressed_Data", H5O_TYPE_DATASET},
+ {"Float_Data", H5O_TYPE_DATASET},
+};
+
+const H5std_string FILE_NAME("tvisit.h5");
+const H5std_string GROUP_NAME("/Data");
+const H5std_string DSET1_NAME("/Data/Compressed_Data");
+const H5std_string DSET2_NAME("/Data/Float_Data");
+const int RANK = 2;
+const int DIM1 = 2;
+
+// Operator function
+static int visit_obj_cb(H5Object& obj, const H5std_string name, const H5O_info_t *oinfo, void *_op_data)
+{
+ ovisit_ud_t *op_data = static_cast <ovisit_ud_t *>(_op_data);
+
+ // Check for correct object information
+ if(strcmp(op_data->info[op_data->idx].path, name.c_str())) return(H5_ITER_ERROR);
+ if(op_data->info[op_data->idx].type != oinfo->type) return(H5_ITER_ERROR);
+
+ // Advance to next location
+ op_data->idx++;
+
+ return(H5_ITER_CONT);
+}
+
+/*-------------------------------------------------------------------------
+ * Function: test_visit
+ *
+ * Purpose Test H5Object::visit
+ *
+ * Return Success: 0
+ * Failure: -1
+ *
+ * February 8, 2019
+ *-------------------------------------------------------------------------
+ */
+static void test_visit(hid_t fapl_id, hbool_t new_format)
+{
+ hsize_t dims[2];
+ hsize_t cdims[2];
+ char filename[NAME_BUF_SIZE];
+
+ if(new_format)
+ SUBTEST("H5Object::visit (w/new group format)")
+ else
+ SUBTEST("H5Object::visit")
+
+ try
+ {
+ // Use the file access template id to create a file access prop. list
+ FileAccPropList fapl(fapl_id);
+
+ // Build the hdf5 file name and create the file
+ h5_fixname(FILENAME[3], fapl_id, filename, sizeof filename);
+ H5File *file = new H5File(filename, H5F_ACC_TRUNC, FileCreatPropList::DEFAULT, fapl);
+
+ // Create a group
+ Group* group = new Group(file->createGroup(GROUP_NAME));
+
+ // Create a chunked/compressed dataset within this group specified by path
+ dims[0] = 20;
+ dims[1] = 2;
+ cdims[0] = 2;
+ cdims[1] = 2;
+ DataSpace *dataspace = new DataSpace(RANK, dims); // create new dspace
+ DSetCreatPropList ds_creatplist; // create dataset creation prop list
+ ds_creatplist.setChunk(2, cdims); // then modify it for compression
+ ds_creatplist.setDeflate(6);
+
+ DataSet* dataset = new DataSet(file->createDataSet(DSET1_NAME,
+ PredType::NATIVE_INT, *dataspace, ds_creatplist));
+
+ delete dataset;
+ delete dataspace;
+
+ // Create another dataset
+ dims[0] = 5;
+ dims[1] = 2;
+ dataspace = new DataSpace(RANK, dims); // create second dspace
+ dataset = new DataSet(file->createDataSet(DSET2_NAME,
+ PredType::NATIVE_FLOAT, *dataspace));
+
+ // Close everything
+ delete dataset;
+ delete dataspace;
+ delete group;
+ delete file;
+
+ // Reopen the file and group in the file.
+ file = new H5File(filename, H5F_ACC_RDWR);
+ group = new Group(file->openGroup("Data"));
+
+ // Open the group
+ dataset = new DataSet(group->openDataSet(DSET2_NAME));
+ delete dataset;
+
+ // Visit objects in the file
+ ovisit_ud_t udata; /* User-data for visiting */
+ udata.idx = 0;
+ udata.info = file_visit;
+
+ file->visit(H5_INDEX_NAME, H5_ITER_INC, visit_obj_cb, &udata, H5O_INFO_BASIC);
+
+ // Visit objects in the group
+ udata.idx = 0;
+ udata.info = group_visit;
+
+ group->visit(H5_INDEX_NAME, H5_ITER_INC, visit_obj_cb, &udata, H5O_INFO_BASIC);
+
+ // Close the group and file.
+ delete group;
+ delete file;
+
+ PASSED();
+ } // end of try block
+ catch (Exception& E)
+ {
+ issue_fail_msg("test_visit()", __LINE__, __FILE__, E.getCDetailMsg());
+ }
+} // test_visit
+
+
/*-------------------------------------------------------------------------
* Function: test_links
*
@@ -857,6 +983,11 @@ void test_links()
{
hid_t fapl_id, fapl2_id; /* File access property lists */
unsigned new_format; /* Whether to use the new format or not */
+ const char *envval;
+
+ envval = HDgetenv("HDF5_DRIVER");
+ if(envval == NULL)
+ envval = "nomatch";
fapl_id = h5_fileaccess();
@@ -891,6 +1022,7 @@ void test_links()
test_move(my_fapl_id, new_format);
test_copy(my_fapl_id, new_format);
test_lcpl(my_fapl_id, new_format);
+ test_visit(my_fapl_id, new_format);
} /* end for */
/* Close 2nd FAPL */
generated by cgit v0.12 at 2024-12-26 16:28:52 (GMT)