Class AliasSymbol

server/src/main/java/io/crate/expression/symbol/AliasSymbol.java:36–137

import io.crate.types.DataType;

public final class AliasSymbol implements Symbol {

    private static final long SHALLOW_SIZE = RamUsageEstimator.shallowSizeOfInstance(AliasSymbol.class);

    private final String alias;
    private final Symbol symbol;

    public AliasSymbol(String alias, Symbol symbol) {
        this.alias = alias;
        this.symbol = symbol;
    }

    public AliasSymbol(StreamInput in) throws IOException {
        alias = in.readString();
        symbol = Symbol.fromStream(in);
    }

    public Symbol symbol() {
        return symbol;
    }

    public String alias() {
        return alias;
    }

    @Override
    public boolean isDeterministic() {
        return symbol.isDeterministic();
    }

    @Override
    public boolean any(Predicate<? super Symbol> predicate) {
        return predicate.test(this) || symbol.any(predicate);
    }

    @Override
    public ColumnIdent toColumn() {
        return ColumnIdent.of(alias);
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        out.writeString(alias);
        Symbol.toStream(symbol, out);
    }

    @Override
    public SymbolType symbolType() {
        return SymbolType.ALIAS;
    }

    @Override
    public <C, R> R accept(SymbolVisitor<C, R> visitor, C context) {
        return visitor.visitAlias(this, context);
    }

    @Override
    public DataType<?> valueType() {