diff options
Diffstat (limited to 'java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java')
| -rw-r--r-- | java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java | 335 |
1 files changed, 142 insertions, 193 deletions
diff --git a/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java b/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java index b38b0a0..f61ae0d 100644 --- a/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java +++ b/java/examples/datatypes/H5Ex_T_ObjectReferenceAttribute.java @@ -18,7 +18,6 @@ Next, it reopens the file, dereferences the references, and outputs the names of their targets to the screen. ************************************************************/ - package examples.datatypes; import java.util.EnumSet; @@ -72,7 +71,7 @@ public class H5Ex_T_ObjectReferenceAttribute { long dataset_id = HDF5Constants.H5I_INVALID_HID; long attribute_id = HDF5Constants.H5I_INVALID_HID; long[] dims = { DIM0 }; - byte[][] dset_data = new byte[DIM0][8]; + byte[][] dset_data = new byte[DIM0][HDF5Constants.H5R_REF_BUF_SIZE]; // Create a new file using default properties. try { @@ -86,7 +85,7 @@ public class H5Ex_T_ObjectReferenceAttribute { // Create dataset with a scalar dataspace. try { dataspace_id = H5.H5Screate(HDF5Constants.H5S_SCALAR); - if (dataspace_id >= 0) { + if ((file_id >= 0) && (dataspace_id >= 0)) { dataset_id = H5.H5Dcreate(file_id, DATASETNAME2, HDF5Constants.H5T_STD_I32LE, dataspace_id, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); if (dataset_id >= 0) @@ -113,64 +112,72 @@ public class H5Ex_T_ObjectReferenceAttribute { e.printStackTrace(); } - // Create references to the previously created objects. Passing -1 - // as space_id causes this parameter to be ignored. Other values - // besides valid dataspaces result in an error. try { if (file_id >= 0) { - byte rbuf0[] = H5.H5Rcreate(file_id, GROUPNAME, HDF5Constants.H5R_OBJECT, -1); - byte rbuf1[] = H5.H5Rcreate(file_id, DATASETNAME2, HDF5Constants.H5R_OBJECT, -1); - for (int indx = 0; indx < 8; indx++) { - dset_data[0][indx] = rbuf0[indx]; - dset_data[1][indx] = rbuf1[indx]; + try { + dset_data[0] = H5.H5Rcreate_object(file_id, GROUPNAME, HDF5Constants.H5P_DEFAULT); + } + catch (Throwable err) { + err.printStackTrace(); + } + + try { + dset_data[1] = H5.H5Rcreate_object(file_id, DATASETNAME2, HDF5Constants.H5P_DEFAULT); + } + catch (Throwable err) { + err.printStackTrace(); } } - } - catch (Exception e) { - e.printStackTrace(); - } - // Create dataset with a scalar dataspace to serve as the parent - // for the attribute. - try { - dataspace_id = H5.H5Screate(HDF5Constants.H5S_SCALAR); - if (dataspace_id >= 0) { - dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_I32LE, dataspace_id, - HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); - H5.H5Sclose(dataspace_id); - dataspace_id = HDF5Constants.H5I_INVALID_HID; + // Create dataset with a scalar dataspace to serve as the parent + // for the attribute. + try { + dataspace_id = H5.H5Screate(HDF5Constants.H5S_SCALAR); + if (dataspace_id >= 0) { + dataset_id = H5.H5Dcreate(file_id, DATASETNAME, HDF5Constants.H5T_STD_I32LE, dataspace_id, + HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); + H5.H5Sclose(dataspace_id); + dataspace_id = HDF5Constants.H5I_INVALID_HID; + } + } + catch (Exception e) { + e.printStackTrace(); + } + + // Create dataspace. Setting maximum size to NULL sets the maximum + // size to be the current size. + try { + dataspace_id = H5.H5Screate_simple(RANK, dims, null); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Create the attribute and write the array data to it. + try { + if ((dataset_id >= 0) && (dataspace_id >= 0)) + attribute_id = H5.H5Acreate(dataset_id, ATTRIBUTENAME, HDF5Constants.H5T_STD_REF, dataspace_id, + HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); + } + catch (Exception e) { + e.printStackTrace(); + } + + // Write the dataset. + try { + if (attribute_id >= 0) + H5.H5Awrite(attribute_id, HDF5Constants.H5T_STD_REF, dset_data); + } + catch (Exception e) { + e.printStackTrace(); } } - catch (Exception e) { - e.printStackTrace(); - } - - // Create dataspace. Setting maximum size to NULL sets the maximum - // size to be the current size. - try { - dataspace_id = H5.H5Screate_simple(RANK, dims, null); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Create the attribute and write the array data to it. - try { - if ((dataset_id >= 0) && (dataspace_id >= 0)) - attribute_id = H5.H5Acreate(dataset_id, ATTRIBUTENAME, HDF5Constants.H5T_STD_REF_OBJ, dataspace_id, - HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Write the dataset. - try { - if (attribute_id >= 0) - H5.H5Awrite(attribute_id, HDF5Constants.H5T_STD_REF_OBJ, dset_data); + catch (Exception ex) { + ex.printStackTrace(); } - catch (Exception e) { - e.printStackTrace(); + finally { + try {H5.H5Rdestroy(dset_data[1]);} catch (Exception ex) {} + try {H5.H5Rdestroy(dset_data[0]);} catch (Exception ex) {} } // End access to the dataset and release resources used by it. @@ -190,7 +197,6 @@ public class H5Ex_T_ObjectReferenceAttribute { e.printStackTrace(); } - // Terminate access to the data space. try { if (dataspace_id >= 0) H5.H5Sclose(dataspace_id); @@ -207,7 +213,6 @@ public class H5Ex_T_ObjectReferenceAttribute { catch (Exception e) { e.printStackTrace(); } - } private static void ReadDataset() { @@ -218,158 +223,102 @@ public class H5Ex_T_ObjectReferenceAttribute { int object_type = -1; long object_id = HDF5Constants.H5I_INVALID_HID; long[] dims = { DIM0 }; - byte[][] dset_data; + byte[][] dset_data = new byte[DIM0][HDF5Constants.H5R_REF_BUF_SIZE]; // Open an existing file. try { file_id = H5.H5Fopen(FILENAME, HDF5Constants.H5F_ACC_RDONLY, HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - // Open an existing dataset. - try { - if (file_id >= 0) - dataset_id = H5.H5Dopen(file_id, DATASETNAME, HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - try { - if (dataset_id >= 0) - attribute_id = H5.H5Aopen_by_name(dataset_id, ".", ATTRIBUTENAME, HDF5Constants.H5P_DEFAULT, - HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Get dataspace and allocate memory for read buffer. - try { - if (attribute_id >= 0) - dataspace_id = H5.H5Aget_space(attribute_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - try { - if (dataspace_id >= 0) - H5.H5Sget_simple_extent_dims(dataspace_id, dims, null); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Allocate array of pointers to two-dimensional arrays (the - // elements of the dataset. - dset_data = new byte[(int) dims[0]][8]; - - // Read data. - try { - if (attribute_id >= 0) - H5.H5Aread(attribute_id, HDF5Constants.H5T_STD_REF_OBJ, dset_data); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Output the data to the screen. - for (int indx = 0; indx < dims[0]; indx++) { - System.out.println(ATTRIBUTENAME + "[" + indx + "]:"); - System.out.print(" ->"); - // Open the referenced object, get its name and type. + // Open an existing dataset. try { - if (dataset_id >= 0) { - object_id = H5.H5Rdereference(dataset_id, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5R_OBJECT, dset_data[indx]); - object_type = H5.H5Rget_obj_type(dataset_id, HDF5Constants.H5R_OBJECT, dset_data[indx]); + dataset_id = H5.H5Dopen(file_id, DATASETNAME, HDF5Constants.H5P_DEFAULT); + + try { + attribute_id = H5.H5Aopen_by_name(dataset_id, ".", ATTRIBUTENAME, HDF5Constants.H5P_DEFAULT, + HDF5Constants.H5P_DEFAULT); + + // Get dataspace and allocate memory for read buffer. + try { + dataspace_id = H5.H5Aget_space(attribute_id); + H5.H5Sget_simple_extent_dims(dataspace_id, dims, null); + + // Read data. + H5.H5Aread(attribute_id, HDF5Constants.H5T_STD_REF, dset_data); + + // Output the data to the screen. + for (int indx = 0; indx < dims[0]; indx++) { + System.out.println(ATTRIBUTENAME + "[" + indx + "]:"); + System.out.print(" ->"); + // Open the referenced object, get its name and type. + try { + object_id = H5.H5Ropen_object(dset_data[indx], HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); + try { + object_type = H5.H5Rget_obj_type3(dset_data[indx], HDF5Constants.H5R_OBJECT); + String obj_name = null; + if (object_type >= 0) { + // Get the name. + obj_name = H5.H5Iget_name(object_id); + } + if ((object_id >= 0) && (object_type >= -1)) { + switch (H5G_obj.get(object_type)) { + case H5G_GROUP: + System.out.print("H5G_GROUP"); + break; + case H5G_DATASET: + System.out.print("H5G_DATASET"); + break; + case H5G_TYPE: + System.out.print("H5G_TYPE"); + break; + default: + System.out.print("UNHANDLED"); + } + } + // Print the name. + System.out.println(": " + obj_name); + } + catch (Exception e) { + e.printStackTrace(); + } + finally { + try {H5.H5Oclose(object_id);} catch (Exception e) {} + } + } + catch (Exception e5) { + e5.printStackTrace(); + } + finally { + try {H5.H5Rdestroy(dset_data[indx]);} catch (Exception e5) {} + } + } // end for + } + catch (Exception e4) { + e4.printStackTrace(); + } + finally { + try {H5.H5Sclose(dataspace_id);} catch (Exception e3) {} + } } - String obj_name = null; - if (object_type >= 0) { - // Get the length of the name and retrieve the name. - obj_name = H5.H5Iget_name(object_id); + catch (Exception e3) { + e3.printStackTrace(); } - if ((object_id >= 0) && (object_type >= -1)) { - switch (H5G_obj.get(object_type)) { - case H5G_GROUP: - System.out.print("H5G_GROUP"); - try { - if (object_id >= 0) - H5.H5Gclose(object_id); - } - catch (Exception e) { - e.printStackTrace(); - } - break; - case H5G_DATASET: - System.out.print("H5G_DATASET"); - try { - if (object_id >= 0) - H5.H5Dclose(object_id); - } - catch (Exception e) { - e.printStackTrace(); - } - break; - case H5G_TYPE: - System.out.print("H5G_TYPE"); - try { - if (object_id >= 0) - H5.H5Tclose(object_id); - } - catch (Exception e) { - e.printStackTrace(); - } - break; - default: - System.out.print("UNHANDLED"); - } + finally { + try {H5.H5Aclose(attribute_id);} catch (Exception e4) {} } - // Print the name. - System.out.println(": " + obj_name); } - catch (Exception e) { - e.printStackTrace(); + catch (Exception e2) { + e2.printStackTrace(); + } + finally { + try {H5.H5Dclose(dataset_id);} catch (Exception e2) {} } } - - // End access to the dataset and release resources used by it. - try { - if (attribute_id >= 0) - H5.H5Aclose(attribute_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - try { - if (dataset_id >= 0) - H5.H5Dclose(dataset_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Terminate access to the data space. - try { - if (dataspace_id >= 0) - H5.H5Sclose(dataspace_id); + catch (Exception e1) { + e1.printStackTrace(); } - catch (Exception e) { - e.printStackTrace(); + finally { + try {H5.H5Fclose(file_id);} catch (Exception e1) {} } - - // Close the file. - try { - if (file_id >= 0) - H5.H5Fclose(file_id); - } - catch (Exception e) { - e.printStackTrace(); - } - } public static void main(String[] args) { |