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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.presto.jdbc.internal.spi.type;
import com.facebook.presto.jdbc.internal.spi.ConnectorSession;
import com.facebook.presto.jdbc.internal.spi.block.Block;
import com.facebook.presto.jdbc.internal.spi.block.BlockBuilder;
import com.facebook.presto.jdbc.internal.spi.block.BlockBuilderStatus;
import com.facebook.presto.jdbc.internal.spi.block.UncheckedBlock;
import com.facebook.presto.jdbc.internal.io.airlift.slice.Slice;
import java.util.ArrayList;
import java.util.List;
import static java.util.Collections.unmodifiableList;
import static java.util.Objects.requireNonNull;
import static java.util.stream.Collectors.toList;
public class FunctionType
implements Type
{
public static final String NAME = "function";
private final TypeSignature signature;
private final Type returnType;
private final List argumentTypes;
public FunctionType(List argumentTypes, Type returnType)
{
this.signature = new TypeSignature(NAME, typeParameters(argumentTypes, returnType));
this.returnType = requireNonNull(returnType, "returnType is null");
this.argumentTypes = unmodifiableList(new ArrayList<>(requireNonNull(argumentTypes, "argumentTypes is null")));
}
private static List typeParameters(List argumentTypes, Type returnType)
{
requireNonNull(returnType, "returnType is null");
requireNonNull(argumentTypes, "argumentTypes is null");
List parameters = new ArrayList<>(argumentTypes.size() + 1);
argumentTypes.stream()
.map(Type::getTypeSignature)
.map(TypeSignatureParameter::of)
.forEach(parameters::add);
parameters.add(TypeSignatureParameter.of(returnType.getTypeSignature()));
return unmodifiableList(parameters);
}
public Type getReturnType()
{
return returnType;
}
public List getArgumentTypes()
{
return argumentTypes;
}
@Override
public List getTypeParameters()
{
List parameters = new ArrayList<>(argumentTypes.size() + 1);
parameters.addAll(argumentTypes);
parameters.add(returnType);
return unmodifiableList(parameters);
}
@Override
public final TypeSignature getTypeSignature()
{
return signature;
}
@Override
public String getDisplayName()
{
List names = getTypeParameters().stream()
.map(Type::getDisplayName)
.collect(toList());
return "function<" + String.join(",", names) + ">";
}
@Override
public final Class getJavaType()
{
throw new UnsupportedOperationException(getTypeSignature() + " type does not have Java type");
}
@Override
public boolean isComparable()
{
return false;
}
@Override
public boolean isOrderable()
{
return false;
}
@Override
public long hash(Block block, int position)
{
throw new UnsupportedOperationException(getTypeSignature() + " type is not comparable");
}
@Override
public boolean equalTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition)
{
throw new UnsupportedOperationException(getTypeSignature() + " type is not comparable");
}
@Override
public int compareTo(Block leftBlock, int leftPosition, Block rightBlock, int rightPosition)
{
throw new UnsupportedOperationException(getTypeSignature() + " type is not orderable");
}
@Override
public boolean getBoolean(Block block, int position)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public boolean getBooleanUnchecked(UncheckedBlock block, int internalPosition)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public void writeBoolean(BlockBuilder blockBuilder, boolean value)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public long getLong(Block block, int position)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public long getLongUnchecked(UncheckedBlock block, int internalPosition)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public void writeLong(BlockBuilder blockBuilder, long value)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public double getDouble(Block block, int position)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public double getDoubleUnchecked(UncheckedBlock block, int internalPosition)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public void writeDouble(BlockBuilder blockBuilder, double value)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public Slice getSlice(Block block, int position)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public Slice getSliceUnchecked(Block block, int internalPosition)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public void writeSlice(BlockBuilder blockBuilder, Slice value)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public void writeSlice(BlockBuilder blockBuilder, Slice value, int offset, int length)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public Object getObject(Block block, int position)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public Block getBlockUnchecked(Block block, int internalPosition)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public void writeObject(BlockBuilder blockBuilder, Object value)
{
throw new UnsupportedOperationException(getClass().getName());
}
@Override
public Object getObjectValue(ConnectorSession session, Block block, int position)
{
throw new UnsupportedOperationException();
}
@Override
public void appendTo(Block block, int position, BlockBuilder blockBuilder)
{
throw new UnsupportedOperationException();
}
@Override
public BlockBuilder createBlockBuilder(BlockBuilderStatus blockBuilderStatus, int expectedEntries, int expectedBytesPerEntry)
{
throw new UnsupportedOperationException();
}
@Override
public BlockBuilder createBlockBuilder(BlockBuilderStatus blockBuilderStatus, int expectedEntries)
{
throw new UnsupportedOperationException();
}
}