ucar.ma2.StructureMembers Maven / Gradle / Ivy
/*
* Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
*
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
* Access and use of this software shall impose the following obligations
* and understandings on the user. The user is granted the right, without
* any fee or cost, to use, copy, modify, alter, enhance and distribute
* this software, and any derivative works thereof, and its supporting
* documentation for any purpose whatsoever, provided that this entire
* notice appears in all copies of the software, derivative works and
* supporting documentation. Further, UCAR requests that the user credit
* UCAR/Unidata in any publications that result from the use of this
* software or in any product that includes this software. The names UCAR
* and/or Unidata, however, may not be used in any advertising or publicity
* to endorse or promote any products or commercial entity unless specific
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* understands that UCAR/Unidata is not obligated to provide the user with
* any support, consulting, training or assistance of any kind with regard
* to the use, operation and performance of this software nor to provide
* the user with any updates, revisions, new versions or "bug fixes."
*
* THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package ucar.ma2;
import ucar.nc2.NetcdfFile;
import ucar.nc2.util.Indent;
import java.util.*;
/**
* A Collection of members contained in a StructureData.
*
* @author caron
*/
public class StructureMembers {
private String name;
private Map memberHash;
private List members;
private int structureSize = -1;
public StructureMembers(String name) {
this.name = name;
members = new ArrayList<>();
}
public StructureMembers(StructureMembers from) {
this.name = from.name;
members = new ArrayList<>(from.getMembers().size());
for (Member m : from.members) {
Member nm = new Member(m); // make copy - without the data info
addMember( nm);
if (m.members != null) // recurse
nm.members = new StructureMembers(m.members);
}
}
/**
* Get the name.
*
* @return the name.
*/
public String getName() {
return name;
}
/**
* Add a member.
*
* @param m member to add
*/
public void addMember(Member m) {
members.add(m);
if (memberHash != null)
memberHash.put(m.getName(), m);
}
/**
* Add a member at the given position.
*
* @param m member to add
*/
public void addMember(int pos, Member m) {
members.add(pos, m);
if (memberHash != null)
memberHash.put(m.getName(), m);
}
public Member addMember(String name, String desc, String units, DataType dtype, int[] shape) {
Member m = new Member(name, desc, units, dtype, shape);
addMember(m);
return m;
}
/**
* Remove the given member
* @param m member
* @return position that it used to occupy, or -1 if not found
*/
public int hideMember(Member m) {
if (m == null) return -1;
int index = members.indexOf(m);
members.remove(m);
if (memberHash != null) memberHash.remove(m.getName());
return index;
}
/**
* Get the total size of the Structure in bytes.
*
* @return the total size of the Structure in bytes.
*/
public int getStructureSize() {
if (structureSize < 0)
calcStructureSize();
return structureSize;
}
private void calcStructureSize() {
structureSize = 0;
for (Member member : members) {
structureSize += member.getSizeBytes();
// System.out.println(member.getName()+" size="+member.getTotalSize());
}
}
/**
* Set the total size of the Structure in bytes.
*
* @param structureSize set to this value
*/
public void setStructureSize(int structureSize) {
this.structureSize = structureSize;
}
/**
* Get the list of Member objects.
*
* @return the list of Member objects.
*/
public java.util.List getMembers() {
return members;
}
/**
* Get the names of the members.
*
* @return List of type String.
*/
public java.util.List getMemberNames() {
List memberNames = new ArrayList<>();
for (Member m : members) {
memberNames.add(m.getName());
}
return memberNames;
}
/**
* Get the index-th member
*
* @param index of member
* @return Member
*/
public Member getMember(int index) {
return members.get(index);
}
/**
* Find the member by its name.
*
* @param memberName find by this name
* @return Member matching the name, or null if not found
*/
public Member findMember(String memberName) {
if (memberName == null) return null;
if (memberHash == null) { // delay making the hash table until needed
int initial_capacity = (int) (members.size() / .75) + 1;
memberHash = new HashMap<>(initial_capacity);
for (Member m : members)
memberHash.put(m.getName(), m);
}
return memberHash.get(memberName);
}
/**
* A member of a StructureData.
*/
public class Member {
private String name, desc, units;
private DataType dtype;
private int size = 1;
private int[] shape;
private StructureMembers members; // only if member is type Structure
private boolean isVariableLength = false;
// optional, use depends on ArrayStructure subclass
private Array dataArray;
private Object dataObject;
private int dataParam;
public Member(String name, String desc, String units, DataType dtype, int[] shape) {
this.name = name;
this.desc = desc;
this.units = units;
this.dtype = dtype;
setShape(shape);
}
public Member(Member from) {
this.name = from.name;
this.desc = from.desc;
this.units = from.units;
this.dtype = from.dtype;
this.members = from.members;
setShape(from.shape);
}
/*
* If member is type Structure, you must set its constituent members
* @param members set to this value
*/
public void setStructureMembers(StructureMembers members) {
this.members = members;
}
public StructureMembers getStructureMembers() {
return members;
}
public void setShape(int[] shape) {
this.shape = shape;
this.size = (int) Index.computeSize(shape);
this.isVariableLength = (shape.length > 0 && shape[shape.length - 1] < 0);
}
/**
* Get the short name.
*
* @return the short name.
*/
public String getName() {
return name;
}
public String getFullNameEscaped() {
return NetcdfFile.makeValidPathName(StructureMembers.this.getName()) + "." + NetcdfFile.makeValidPathName(name);
}
public String getFullName() {
return StructureMembers.this.getName() + "." + name;
}
/**
* Get the units string, if any.
*
* @return the units string, or null if none.
*/
public String getUnitsString() {
return units;
}
/**
* Get the description, if any.
*
* @return the description, or null if none.
*/
public String getDescription() {
return desc;
}
/**
* Get the DataType.
*
* @return the DataType.
*/
public DataType getDataType() {
return dtype;
}
/**
* Get the array shape. This does not have to match the VariableSimpleIF.
*
* @return the array shape.
*/
public int[] getShape() {
return shape;
}
/**
* Get the total number of elements.
* This does not have to match the VariableSimpleIF.
*
* @return the total number of elements.
*/
public int getSize() {
return size;
}
public boolean isVariableLength() {
return isVariableLength;
}
/**
* Get the total size in bytes. This does not have to match the VariableSimpleIF.
*
* Note that this will not be correct when containing a member of type Sequence, or String, since those
* are variable length. In that case
*
* @return total size in bytes
*/
public int getSizeBytes() {
if (getDataType() == DataType.SEQUENCE)
return getDataType().getSize();
else if (getDataType() == DataType.STRING)
return getDataType().getSize();
else if (getDataType() == DataType.STRUCTURE)
return size * members.getStructureSize();
else if(this.isVariableLength())
return 0; // do not know
else
return size * getDataType().getSize();
}
/**
* Is this a scalar (size == 1).
* This does not have to match the VariableSimpleIF.
*
* @return if this is a scalar
*/
public boolean isScalar() {
return size == 1;
}
////////////////////////////////////////////////
// these should not really be public
/**
* Get the data parameter value, for use behind the scenes.
*
* @return data parameter value
*/
public int getDataParam() {
return dataParam;
}
/**
* Set the data parameter value, for use behind the scenes.
*
* @param dataParam set to this value
*/
public void setDataParam(int dataParam) {
this.dataParam = dataParam;
}
/**
* Get the data array, if any. Used for implementation, DO NOT USE DIRECTLY!
* @return data object, may be null
*/
public Array getDataArray() {
return dataArray;
}
/**
* Set the data array. Used for implementation, DO NOT USE DIRECTLY!
* @param data set to this Array. must not be a logical view
*/
public void setDataArray(Array data) {
this.dataArray = data;
}
/**
* Get an opaque data object, for use behind the scenes. May be null
* @return data object, may be null
*/
public Object getDataObject() {
return dataObject;
}
/**
* Set an opaque data object, for use behind the scenes.
* @param o set to this value
*/
public void setDataObject(Object o) {
this.dataObject = o;
}
public void setVariableInfo(String vname, String desc, String unitString, DataType dtype) {
if (!this.name.equals(vname) && (memberHash != null)) {
memberHash.remove(name);
memberHash.put(vname, this);
}
name = vname;
if (dtype != null)
this.dtype = dtype;
if (unitString != null)
this.units = unitString;
if (desc != null)
this.desc = desc;
}
public void showInternal(Formatter f, Indent indent) {
f.format("%sname='%s' desc='%s' units='%s' dtype=%s size=%d dataObject=%s dataParam=%d", indent, name, desc, units, dtype, size, dataObject, dataParam);
if (members != null) {
indent.incr();
f.format("%n%sNested members %s%n", indent, members.getName());
for (StructureMembers.Member m : members.getMembers())
m.showInternal(f, indent);
indent.decr();
}
f.format("%n");
}
public String toString() {
return name;
}
}
}
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