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Schema.cpp
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Schema.cpp
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
// Copyright (c) 2014-2016, Lawrence Livermore National Security, LLC.
//
// Produced at the Lawrence Livermore National Laboratory
//
// LLNL-CODE-666778
//
// All rights reserved.
//
// This file is part of Conduit.
//
// For details, see: http://software.llnl.gov/conduit/.
//
// Please also read conduit/LICENSE
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the disclaimer below.
//
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the disclaimer (as noted below) in the
// documentation and/or other materials provided with the distribution.
//
// * Neither the name of the LLNS/LLNL nor the names of its contributors may
// be used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 LAWRENCE LIVERMORE NATIONAL SECURITY,
// LLC, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
// IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
//-----------------------------------------------------------------------------
///
/// file: Schema.cpp
///
//-----------------------------------------------------------------------------
#include "Schema.hpp"
//-----------------------------------------------------------------------------
// -- standard lib includes --
//-----------------------------------------------------------------------------
#include <stdio.h>
//-----------------------------------------------------------------------------
// -- conduit includes --
//-----------------------------------------------------------------------------
#include "Generator.hpp"
#include "Error.hpp"
#include "Utils.hpp"
//-----------------------------------------------------------------------------
// -- begin conduit:: --
//-----------------------------------------------------------------------------
namespace conduit
{
//=============================================================================
//-----------------------------------------------------------------------------
//
//
// -- begin conduit::Schema public methods --
//
//
//-----------------------------------------------------------------------------
//=============================================================================
//----------------------------------------------------------------------------
//
/// Schema construction and destruction.
//
//----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
Schema::Schema()
{
init_defaults();
}
//---------------------------------------------------------------------------//
Schema::Schema(const Schema &schema)
{
init_defaults();
set(schema);
}
//---------------------------------------------------------------------------//
Schema::Schema(index_t dtype_id)
{
init_defaults();
set(dtype_id);
}
//---------------------------------------------------------------------------//
Schema::Schema(const DataType &dtype)
{
init_defaults();
set(dtype);
}
//---------------------------------------------------------------------------//
Schema::Schema(const std::string &json_schema)
{
init_defaults();
set(json_schema);
}
//---------------------------------------------------------------------------//
Schema::Schema(const char *json_schema)
{
init_defaults();
set(std::string(json_schema));
}
//---------------------------------------------------------------------------//
Schema::~Schema()
{release();}
//---------------------------------------------------------------------------//
void
Schema::reset()
{
release();
}
//-----------------------------------------------------------------------------
//
// Schema set methods
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
void
Schema::set(const Schema &schema)
{
bool init_children = false;
index_t dt_id = schema.m_dtype.id();
if (dt_id == DataType::OBJECT_ID)
{
init_object();
init_children = true;
object_map() = schema.object_map();
object_order() = schema.object_order();
}
else if (dt_id == DataType::LIST_ID)
{
init_list();
init_children = true;
}
else
{
m_dtype = schema.m_dtype;
}
if (init_children)
{
std::vector<Schema*> &my_children = children();
const std::vector<Schema*> &their_children = schema.children();
for (index_t i = 0; i < (index_t)their_children.size(); i++)
{
Schema *child_schema = new Schema(*their_children[i]);
child_schema->m_parent = this;
my_children.push_back(child_schema);
}
}
}
//---------------------------------------------------------------------------//
void
Schema::set(index_t dtype_id)
{
reset();
m_dtype.reset();
m_dtype.set_id(dtype_id);
}
//---------------------------------------------------------------------------//
void
Schema::set(const DataType &dtype)
{
reset();
if (dtype.id() == DataType::OBJECT_ID) {
init_object();
} else if (dtype.id() == DataType::LIST_ID) {
init_list();
}
m_dtype = dtype;
}
//---------------------------------------------------------------------------//
void
Schema::set(const std::string &json_schema)
{
reset();
walk_schema(json_schema);
}
//-----------------------------------------------------------------------------
//
/// Schema assignment operators
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
Schema &
Schema::operator=(const Schema &schema)
{
if(this != &schema)
{
set(schema);
}
return *this;
}
//---------------------------------------------------------------------------//
Schema &
Schema::operator=(const DataType &dtype)
{
set(dtype);
return *this;
}
//---------------------------------------------------------------------------//
Schema &
Schema::operator=(const std::string &json_schema)
{
set(json_schema);
return *this;
}
//-----------------------------------------------------------------------------
//
/// Information Methods
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
index_t
Schema::total_bytes() const
{
index_t res = 0;
index_t dt_id = m_dtype.id();
if(dt_id == DataType::OBJECT_ID || dt_id == DataType::LIST_ID)
{
const std::vector<Schema*> &lst = children();
for (std::vector<Schema*>::const_iterator itr = lst.begin();
itr < lst.end(); ++itr)
{
res += (*itr)->total_bytes();
}
}
else if (dt_id != DataType::EMPTY_ID)
{
res = m_dtype.total_bytes();
}
return res;
}
//---------------------------------------------------------------------------//
index_t
Schema::total_bytes_compact() const
{
index_t res = 0;
index_t dt_id = m_dtype.id();
if(dt_id == DataType::OBJECT_ID || dt_id == DataType::LIST_ID)
{
const std::vector<Schema*> &lst = children();
for (std::vector<Schema*>::const_iterator itr = lst.begin();
itr < lst.end(); ++itr)
{
res += (*itr)->total_bytes_compact();
}
}
else if (dt_id != DataType::EMPTY_ID)
{
res = m_dtype.total_bytes_compact();
}
return res;
}
//---------------------------------------------------------------------------//
bool
Schema::is_compact() const
{
return total_bytes_compact() == total_bytes();
}
//---------------------------------------------------------------------------//
index_t
Schema::spanned_bytes() const
{
index_t res = 0;
index_t dt_id = m_dtype.id();
if(dt_id == DataType::OBJECT_ID || dt_id == DataType::LIST_ID)
{
const std::vector<Schema*> &lst = children();
for (std::vector<Schema*>::const_iterator itr = lst.begin();
itr < lst.end(); ++itr)
{
// spanned bytes is the max of the spanned bytes of
// all children
index_t curr_span = (*itr)->spanned_bytes();
if(curr_span > res)
{
res = curr_span;
}
}
}
else
{
res = m_dtype.spanned_bytes();
}
return res;
}
//---------------------------------------------------------------------------//
bool
Schema::compatible(const Schema &s) const
{
index_t dt_id = m_dtype.id();
index_t s_dt_id = s.dtype().id();
if(dt_id != s_dt_id)
return false;
bool res = true;
if(dt_id == DataType::OBJECT_ID)
{
// each of s's entries that match paths must have dtypes that match
std::map<std::string, index_t>::const_iterator itr;
for(itr = s.object_map().begin();
itr != s.object_map().end() && res;
itr++)
{
// make sure we actually have the path
if(has_path(itr->first))
{
// use index to fetch the child from the other schema
const Schema &s_chld = s.child(itr->second);
// fetch our child by name
const Schema &chld = fetch_child(itr->first);
// do compat check
res = chld.compatible(s_chld);
}
}
}
else if(dt_id == DataType::LIST_ID)
{
// each of s's entries dtypes must match
index_t s_n_chd = s.number_of_children();
// can't be compatible in this case
if(number_of_children() < s_n_chd)
return false;
const std::vector<Schema*> &s_lst = s.children();
const std::vector<Schema*> &lst = children();
for(index_t i = 0; i < s_n_chd && res; i++)
{
res = lst[i]->compatible(*s_lst[i]);
}
}
else
{
res = m_dtype.compatible(s.dtype());
}
return res;
}
//---------------------------------------------------------------------------//
bool
Schema::equals(const Schema &s) const
{
index_t dt_id = m_dtype.id();
index_t s_dt_id = s.dtype().id();
if(dt_id != s_dt_id)
return false;
bool res = true;
if(dt_id == DataType::OBJECT_ID)
{
// all entries must be equal
std::map<std::string, index_t>::const_iterator itr;
for(itr = s.object_map().begin();
itr != s.object_map().end() && res;
itr++)
{
if(has_path(itr->first))
{
index_t s_idx = itr->second;
res = s.children()[s_idx]->equals(fetch_child(itr->first));
}
else
{
res = false;
}
}
for(itr = object_map().begin();
itr != object_map().end() && res;
itr++)
{
if(s.has_path(itr->first))
{
index_t idx = itr->second;
res = children()[idx]->equals(s.fetch_child(itr->first));
}
else
{
res = false;
}
}
}
else if(dt_id == DataType::LIST_ID)
{
// all entries must be equal
index_t s_n_chd = s.number_of_children();
// can't be compatible in this case
if(number_of_children() != s_n_chd)
return false;
const std::vector<Schema*> &s_lst = s.children();
const std::vector<Schema*> &lst = children();
for(index_t i = 0; i < s_n_chd && res; i++)
{
res = lst[i]->equals(*s_lst[i]);
}
}
else
{
res = m_dtype.equals(s.dtype());
}
return res;
}
//-----------------------------------------------------------------------------
//
/// Transformation Methods
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
void
Schema::compact_to(Schema &s_dest) const
{
s_dest.reset();
compact_to(s_dest,0);
}
//---------------------------------------------------------------------------//
std::string
Schema::to_json(bool detailed,
index_t indent,
index_t depth,
const std::string &pad,
const std::string &eoe) const
{
std::ostringstream oss;
to_json_stream(oss,detailed,indent,depth,pad,eoe);
return oss.str();
}
//---------------------------------------------------------------------------//
void
Schema::to_json_stream(std::ostream &os,
bool detailed,
index_t indent,
index_t depth,
const std::string &pad,
const std::string &eoe) const
{
if(m_dtype.id() == DataType::OBJECT_ID)
{
os << eoe;
utils::indent(os,indent,depth,pad);
os << "{" << eoe;
index_t nchildren = (index_t) children().size();
for(index_t i=0; i < nchildren;i++)
{
utils::indent(os,indent,depth+1,pad);
os << "\""<< object_order()[i] << "\": ";
children()[i]->to_json_stream(os,detailed,indent,depth+1,pad,eoe);
if(i < nchildren-1)
os << ",";
os << eoe;
}
utils::indent(os,indent,depth,pad);
os << "}";
}
else if(m_dtype.id() == DataType::LIST_ID)
{
os << eoe;
utils::indent(os,indent,depth,pad);
os << "[" << eoe;
index_t nchildren = (index_t) children().size();
for(index_t i=0; i < nchildren;i++)
{
utils::indent(os,indent,depth+1,pad);
children()[i]->to_json_stream(os,detailed,indent,depth+1,pad,eoe);
if(i < nchildren-1)
os << ",";
os << eoe;
}
utils::indent(os,indent,depth,pad);
os << "]";
}
else // assume leaf data type
{
m_dtype.to_json_stream(os);
}
}
//-----------------------------------------------------------------------------
//
/// Basic I/O methods
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
void
Schema::save(const std::string &ofname,
bool detailed,
index_t indent,
index_t depth,
const std::string &pad,
const std::string &eoe) const
{
// TODO: this is ineff, get base class rep correct?
std::ostringstream oss;
to_json_stream(oss,detailed,indent,depth,pad,eoe);
std::ofstream ofile;
ofile.open(ofname.c_str());
if(!ofile.is_open())
CONDUIT_ERROR("<Schema::save> failed to open: " << ofname);
ofile << oss.str();
ofile.close();
}
//---------------------------------------------------------------------------//
void
Schema::load(const std::string &ifname)
{
std::ifstream ifile;
ifile.open(ifname.c_str());
if(!ifile.is_open())
CONDUIT_ERROR("<Schema::load> failed to open: " << ifname);
std::string res((std::istreambuf_iterator<char>(ifile)),
std::istreambuf_iterator<char>());
set(res);
}
//-----------------------------------------------------------------------------
//
/// Access to children (object and list interface)
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
index_t
Schema::number_of_children() const
{
if(m_dtype.id() != DataType::LIST_ID &&
m_dtype.id() != DataType::OBJECT_ID)
return 0;
return (index_t)children().size();
}
//---------------------------------------------------------------------------//
Schema &
Schema::child(index_t idx)
{
return *children()[idx];
}
//---------------------------------------------------------------------------//
const Schema &
Schema::child(index_t idx) const
{
return *children()[idx];
}
//---------------------------------------------------------------------------//
Schema *
Schema::child_ptr(index_t idx)
{
return &child(idx);
}
//---------------------------------------------------------------------------//
void
Schema::remove(index_t idx)
{
index_t dtype_id = m_dtype.id();
if(! (dtype_id == DataType::LIST_ID || dtype_id == DataType::OBJECT_ID))
{
CONDUIT_ERROR("<Schema::remove> Schema is not LIST_ID or OBJECT_ID, dtype is"
<< m_dtype.name());
}
std::vector<Schema*> &chldrn = children();
if(idx > (index_t) chldrn.size())
{
CONDUIT_ERROR("<Schema::remove> Invalid index:"
<< idx << ">" << chldrn.size() << "(list_size)");
}
if(dtype_id == DataType::OBJECT_ID)
{
// any index above the current needs to shift down by one
for (index_t i = idx; i < (index_t) object_order().size(); i++)
{
object_map()[object_order()[i]]--;
}
object_map().erase(object_order()[idx]);
object_order().erase(object_order().begin() + idx);
}
Schema* child = chldrn[idx];
delete child;
chldrn.erase(chldrn.begin() + idx);
}
//---------------------------------------------------------------------------//
Schema &
Schema::operator[](index_t idx)
{
return child(idx);
}
//---------------------------------------------------------------------------//
const Schema &
Schema::operator[](index_t idx) const
{
return child(idx);
}
//-----------------------------------------------------------------------------
//
/// Object interface methods
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
Schema&
Schema::fetch_child(const std::string &path)
{
// fetch w/ path forces OBJECT_ID
if(m_dtype.id() != DataType::OBJECT_ID)
CONDUIT_ERROR("<Schema::child[OBJECT_ID]>: Schema is not OBJECT_ID");
std::string p_curr;
std::string p_next;
utils::split_path(path,p_curr,p_next);
index_t idx = child_index(p_curr);
// check for parent
if(p_curr == "..")
{
if(m_parent == NULL)// TODO: check for erro (no parent)
{
CONDUIT_ERROR("Tried to fetch non-existent parent Schema.")
}
else
{
return m_parent->fetch_child(p_next);
}
}
if(p_next.empty())
{
return *children()[idx];
}
else
{
return children()[idx]->fetch_child(p_next);
}
}
//---------------------------------------------------------------------------//
const Schema &
Schema::fetch_child(const std::string &path) const
{
// fetch w/ path forces OBJECT_ID
if(m_dtype.id() != DataType::OBJECT_ID)
CONDUIT_ERROR("<Schema::child[OBJECT_ID]>: Schema is not OBJECT_ID");
std::string p_curr;
std::string p_next;
utils::split_path(path,p_curr,p_next);
// check for parent
if(p_curr == "..")
{
if(m_parent != NULL) // TODO: check for erro (no parent)
return m_parent->fetch_child(p_next);
}
index_t idx = child_index(p_curr);
if(p_next.empty())
{
return *children()[idx];
}
else
{
return children()[idx]->fetch_child(p_next);
}
}
//---------------------------------------------------------------------------//
index_t
Schema::child_index(const std::string &path) const
{
index_t res=0;
// find p_curr with an iterator
std::map<std::string, index_t>::const_iterator itr;
itr = object_map().find(path);
// error if child does not exist.
if(itr == object_map().end())
{
///
/// TODO: Full path errors would be nice here.
///
CONDUIT_ERROR("<Schema::child_index[OBJECT_ID]>"
<< "Attempt to access invalid child:" << path);
}
else
{
res = itr->second;
}
return res;
}
//---------------------------------------------------------------------------//
std::string
Schema::child_name(index_t idx) const
{
std::string res = "";
if(m_dtype.id() == DataType::OBJECT_ID)
{
const std::vector<std::string> &obj_order = object_order();
if( idx < obj_order.size())
{
res = obj_order[idx];
}
}
return res;
}
//---------------------------------------------------------------------------//
Schema &
Schema::fetch(const std::string &path)
{
// fetch w/ path forces OBJECT_ID
init_object();
std::string p_curr;
std::string p_next;
utils::split_path(path,p_curr,p_next);
// handle parent
// check for parent
if(p_curr == "..")
{
if(m_parent != NULL) // TODO: check for error (no parent)
return m_parent->fetch(p_next);
}
if (!has_path(p_curr))
{
Schema* my_schema = new Schema();
my_schema->m_parent = this;
children().push_back(my_schema);
object_map()[p_curr] = children().size() - 1;
object_order().push_back(p_curr);
}
index_t idx = child_index(p_curr);
if(p_next.empty())
{
return *children()[idx];
}
else
{
return children()[idx]->fetch(p_next);
}
}
//---------------------------------------------------------------------------//
Schema *
Schema::fetch_ptr(const std::string &path)
{
return &fetch(path);
}
//---------------------------------------------------------------------------//
const Schema &
Schema::operator[](const std::string &path) const
{
return fetch_child(path);
}
//---------------------------------------------------------------------------//
Schema &
Schema::operator[](const std::string &path)
{
return fetch(path);
}
//---------------------------------------------------------------------------//
bool
Schema::has_path(const std::string &path) const
{
// for the non-object case, has_path simply returns false
if(m_dtype.id() != DataType::OBJECT_ID)
return false;
std::string p_curr;
std::string p_next;
utils::split_path(path,p_curr,p_next);
// handle parent case (..)
const std::map<std::string,index_t> &ents = object_map();
if(ents.find(p_curr) == ents.end())
{
return false;
}
if(!p_next.empty())
{
index_t idx = ents.find(p_curr)->second;
return children()[idx]->has_path(p_next);
}
else
{
return true;
}
}
//---------------------------------------------------------------------------//
void
Schema::paths(std::vector<std::string> &paths) const
{
paths = object_order();
}
//---------------------------------------------------------------------------//
const std::vector<std::string>&
Schema::paths() const
{
return object_order();
}
//---------------------------------------------------------------------------//
void
Schema::remove(const std::string &path)
{
if(m_dtype.id() != DataType::OBJECT_ID)
CONDUIT_ERROR("<Schema::remove[OBJECT_ID]> Schema is not OBJECT_ID");
std::string p_curr;
std::string p_next;
utils::split_path(path,p_curr,p_next);
index_t idx = child_index(p_curr);
Schema *child = children()[idx];
if(!p_next.empty())
{
child->remove(p_next);
}
else
{
// any index above the current needs to shift down by one
for (index_t i = idx; i < (index_t) object_order().size(); i++)
{
object_map()[object_order()[i]]--;
}
object_map().erase(p_curr);
object_order().erase(object_order().begin() + idx);
children().erase(children().begin() + idx);
delete child;
}
}
//---------------------------------------------------------------------------//
Schema &
Schema::append()
{
init_list();
init_list();
Schema *sch = new Schema();
children().push_back(sch);
return *sch;
}
//=============================================================================
//-----------------------------------------------------------------------------
//
//
// -- begin conduit::Schema private methods --
//
//
//-----------------------------------------------------------------------------
//=============================================================================
//-----------------------------------------------------------------------------
//
// -- private methods that help with init, memory allocation, and cleanup --
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------//
void
Schema::init_defaults()
{
m_dtype = DataType::empty();
m_hierarchy_data = NULL;
m_parent = NULL;
}
//---------------------------------------------------------------------------//
void
Schema::init_object()
{
if(dtype().id() != DataType::OBJECT_ID)
{
reset();
m_dtype = DataType::object();
m_hierarchy_data = new Schema_Object_Hierarchy();
}
}
//---------------------------------------------------------------------------//
void
Schema::init_list()
{
if(dtype().id() != DataType::LIST_ID)
{
reset();